Review: MrGhost EMR detector

Adding to my list of sensors and scanners, if you recall the APOC Radiation Detector I reviewed some time ago, here's another one that I've had for a while and then came across it again recently.

I had backed this on Kickstarter, specifically because I wanted to add to my list of spectrums I could detect, surpassing the Gamma and x- rays, and the occasional Alpha particle. It was for a detector that would connect to an iPhone or similar product and an app to drive the detection process. The app and Device go by the funny name Mr.Ghost, and takes a page from the PKE Meter from Ghostbusters although it's fundamentals are based on the material world rather than the preternatural. The creator goes to lengths to state the app is intended for entertainment purposes only and does not provide true ghost detecting functionality.

EM radiation stands for "electromagnetic radiation" is a wave-like form of energy like microwaves, visible light, and x-rays. EMF stands for "electromagnetic field" and is the near field part of EM radiation. Any time you have electrons moving through wire (like in the power supply of your appliances), it generates an electromagnetic field. Mr.Ghost acts to detect this field and is specifically tuned to detect AC electricity.

MrGhost is the companion app for the Mr.Ghost EMF detector that plugs into the headphone jack of your device. I've used it for both my iPad and iPhones, and never had any trouble. For those without the peripheral, the app will still work as an advanced sound level detector with your regular microphone so it is fun to use either way.

The readouts of the app show both the strength of the signal at the top, listed in RMS,
typical readings are 12-60 for fluorescent lights, 20-30 for wall-adaptors, 100-200 for dimmer switches, 200-400 for flatscreen TV's and 2000-4000 for old CRT tv's.

The second window shows either a spectral analysis of the emissions  or its waveform, giving you an impression of the nature of the emissions. The spectral analysis starts at approximately 10hz on the left and moves up to 22,000hz on the right.

The third window gives a sliding record of signal strength over time, based on the RMS reading from the main window.

The control sliders at the bottom control sensitivity, and the one below that allows you to set an offset, to baseline the device you are scanning with the Mr.Ghost from. There are also "record" and "send memory" options to capture your particular observations be email.

There are in fact three "modes" to the MrGhost app: primary scanning, gyro-mode and glow-mode. These are accessed by swiping left or right from the main window.

In gyro mode, the main window gives a block of the same scaled-by-colour signal strength as with th primary mode, blue being lowest, through grey to yellow, orange and red to white. It also gauges strength by proximity. The app ties into the iPhone gyroscope to giv you a real time, directional signal.  Adjust the sensitivity all the way left, and swing your phone back and forth in gyro mode and see the direction of high powered emitters. Very good if you're trying to pinpoint a obfuscated power source, like faulty wiring, a secreted transmitter or perhaps whatever spook keeps moving the remote control. .


Glow mode fills he entire screen with the signal detection colour of the gyro-mode, but without an extra data, just full screen colour. It glows brighter/hotter based on emission level, it also allows recording of your detected signals if you can film or time-lapse your detection to paint a light-picture of signal strength.

One thing that Mr.Ghost will not detect is the mobile phone you use to drive it and capture the signals. It was designed such that the EMF coming from the iPhone is generally above the 22.05khz cutoff that the detector senses. This means you can use it without having to turn on airplane mode, and without contaminating your data capture. Mobile devices do cause a tiny amount of baseline signal which the offset feature can handle easily. It does not affect functioning. 

This does mean however that you can't use it to find your lost phone ...

Overall, his is a fun peripheral and well or together app. It is a bit tricky to get the settings right so you can capture meaningful data, and it's not a professional industrial espionage signal detector, but for what it is, it's totally worth getting and waving around to gauge what all the trappings of modern life are radiating at you. 

Wish Lust: off-road vehicles

I was heading home from work, and I went past this vehicle, parked in the parking lot entrance of an apartment block, and I was so impressed that I wanted to snap a few pictures and tell you what I thought about it. There has been so much done to the set-up that I couldn't even tell what the original rig under it was, but it has a fully enclosed tool and storage locker suite, with four lockable cupboards, two of which were vented, possibly to house pig-dogs or some such. Big off-road tires, with two spares on the back, as well as dual front and back dynema cable-winches, and a heavy-duty jack .

An awning canopy which looks like it might be a full tent version  was fitted to the roof, as well as a roof-rack full of camping and bedding gear like bed-rolls. Packs set to the back of the spare tires give even more storage, though probably not for anything too valuable. Might even be solar shower reservoirs. Extra LED lights, running-boards, a snorkel, a big cow-pusher and a heavy duty suspension upgrade finish off what looks to be a very impressive off-road and off-grid setup. It made me envious!

My own little Toyota Rav4 AWD is rather soccer-mom in comparison. Given that I don't do much off-roading, other than getting to and from some pretty family-friendly camping sites and the occasional trip to the snow, I don't really have much regular excuse for a more workhorse set up, other than in the interests of preparedness. Family utility won out when I got this vehicle. That said, I do keep a variety of useful and important kit stowed away in its Millennium Falcon like storage bays: 

First Aid kits, my in-the-car Bug-Out-Bag, a pretty comprehensive tool-bag, rain-gear, Hi-Vis gear, oil, fishing rods, jumper-leads, a hatchet, some really neat collapsible fishing poles and a tackle box, as well as my trusty Stetson all live stowed away ready for any emergency that comes up. I also have a Hercules Off-road Recovery kit,  which isn't pictured. I also have two removable roof-racks, which strap on to the top, through the door-frames, and give me instant top-side storage when I have even more to load. 

These originally came to let me haul my AquaYak tandem kayak, but have been invaluable camping and both salvage and shopping. Given the size of our family, I often ponder that I would have been better served with a people mover, but the Rav4 has served me well. The boot by itself is spacious and lets us haul a whole lot more than you might expect. It would be awesome to one day have a decent rough-riding, off-road, Mad Max worthy vehicle, and I know one of my friends recently got an ex-Army Land Rover Defender  which will make an excellent bush-basher, so I know its possible.

Wish-Lust: Kickstarter- SPARtool

I caught the scent of a new hardcore multi-tool being crowd-sourced on Kickstarter. Contacting the designer, Stewart Yeoh , I got some pictures to share with you, and the text behind the ideas.

I've covered a couple of tools like this in the past; the famous Crovel, the ubiquitous e-tool , and the Bosse Tools shovel. Then there are the Dead-On Superhammer and the Stanley FUBAR.

Stewart put a very thorough description of the SPARtool up on the Kickstarter, so this is going to mostly be a repeat of his words. So, here they are:

 The SPARtool needed to be able to:

• Dig in both soft and hard ground.
• Chop through branches and split logs.
• Saw through wood, plastic, bone, or sheet metal.
• Hammer tent stakes, nails, or rocks.
• Open a cold bottle of something refreshing after all that work!

A common gripe with multi-tools is that many of their mechanisms are awkward and difficult to use, and inferior to a dedicated tool for the job.  We strive to create a design that shifts smoothly and safely between functions, and is comfortable for all its uses.

Shovel 

The SPARtool features a 6"x 8" shovel head with integrated chopping edge, saw blade, and bottle opener.  The 1075 carbon steel and Zytel handle is topped with a flat pry bar, hammer, and 4" pick that functions as a handle for digging and sawing.  the total tool length is 22", and the weight is 2 lbs 15 oz. 

Shovels derive much of their strength through smoothly transitioning concave and convex geometry, which distributes stresses evenly and allows them to be thin and light. 

The SPARtool shovel reflects these principles in its shovel head design.  Sturdy tempered carbon steel provides the cutting edge, which is both hard enough to hold an edge, and tough enough to absorb impact. The face is gently curved to increase the angle of repose of loose soil, and gather more in each scoop.  Our shovel provides the foundation for other tools while remaining an efficient digging machine.

Axe

One side of the hardened and tempered steel shovel head is ground scary sharp, giving a generous 9-inch cutting surface.  When used against small branches the thin edge acts like a machete, passing through with minimal resistance. When employed to split logs, the curvature of the shovel head acts more like an ax, forcing the wood apart cleanly. The edge of the shovel is carefully aligned parallel along the center of the handle, creating the most direct transmission of force, and reducing the chance for dangerous glancing blows.  

Saw 

Sometimes a chopper is not the right tool for a job. When you need to make a clean cut, separate bones in game, or neatly trim pipe or tubing a saw is the answer. Saws are often one of the weakest links in multi-tools due to disregard for their mechanical and design principles. Our saw teeth are an aggressive 4/inch, 60° tooth layout, cut at a 15° rake.  Our saw is laid out as a crosscut saw, with a 15° fleam and a wide alternating offset tooth pattern to clear a wide kerf. Once again the saw edge is parallel to the handle to allow pure single axis motion.  

Hammer and Pick

Our 1.5" hammer head provides a large and forgiving striking surface; while its thick plate steel construction makes damaging it a near impossibility. 

The 4 inch pick spike can break hard earth and rocks, forcefully open padlocks, and might save your life if the zombies ever do decide to rise.  The curved pick also serves as a convenient and comfortable handle when digging or sawing. The top end of the SPARtool is inspired by the Halligan bar, a tool used by firefighters and first responders for forcible entry and rescue. We have maintained the layout so that Halligan techniques can be used with the SPARtool.

The SPARtool handle ends in a flat pry bar with a rounded, shepherds-crook curve. Useful not just for prying open doors or crates but also pulling nails, splitting wood, chiseling, and other demolition tasks. The improved bottle opener now fits a variety of sizes, and the 0.25" plate steel construction will never wear out.

On every pocket and key chain multi-tool I have ever owned the second most used item is always the bottle opener. Maybe I just like beer, but this tool was a necessity to me.

Handle

SPARtool's handle is designed for strength and comfort. The backbone of the tool is a .20" thick carbon steel bar, forged half round (think of a tape measure vs. a floppy metal ribbon of the same thickness) to fit in your hand. Inside the half round's curvature is an impact grade Zytel© polymer insert; which provides stiffness in the secondary direction, and is textured to give a secure grip.

The SPARtool sheath is built from 1050 denier ballistic nylon with MOLLE-compatible strapping and belt loop. The cutting surfaces on the shovel head are protected by a nylon and Kydex sheath which is fully detachable from the backbone of the sheath. The cutting surfaces of the prybar and pick are similarly protected with a Kydex guard, and are freely detachable with secure snaps. When in use, the cover guard for the opposite end is left in place and protects the user from accidental injury.  

So, it's a great looking tool, and certainly covers a whole bunch of options; a shovel, an axe, a saw, a pry-bar, a pick-axe and a hammer. It looks like a really serious and well put together tool. I can see a whole bunch of applications for both survival, breaching and entry, and even disaster survival. You'd do well to look at it and perhaps add one to your collection too.

Review: FireCone

This is an awesome little fire-starter that I have backed on Kickstarter, and was lucky enough to receive a prototype to share my thoughts on.

The FireCone is a tunable alcohol burner that is operable for starting fires, igniting barbeques, emergency heating, or just holding a candle in style. It will burn a bunch of different liquid fuels; alcohol gel, 70% isopropyl alcohol, BioEthanol, Methanol, and denatured alcohol (methylated spirits).

The principle of the thing is that there are two pieces, the base and the cone. Liquid fuel is added to the base, and when lit, convection and conductive heat act to continually vaporise and drive the fire. The scalloped notches in both the base and the cone allow the operator to adjust the amount of air that feed inside the cone, allowing the FireCone to be tuned, just as you would a Bunsen Burner.

The internal cavity is the primary fuel reservoir but the external ring also works well, it holds around 30mL of fuel in total. The cone and the base are both textured, which both aids the wicking properties but also gives better surface area for gripping and moving it around when adjusting the flame. The cone part can even be inverted to offer even more burning surface area, but this eliminates the very specifically engineered convection currents you get when it is in its "volcano" configuration.

Here's some wood pyrochemistry for you: Wood ignites at between 190oC (374oF) and 260oC (500oF) by producing volatile gases. Around 590oC (1,100F), the volatile gases ignite when mixed with oxygen. The more oxygen a fire gets, the cleaner and hotter it burns, which is where the venting of the FireCone come in to effect.

As wood reduces to charcoal the temperature potential increases and some of the best wood stoves achieve temperatures up to 1095oC (2,000oF). As a woodstove starter the Firecone has been designed to survive those temperatures.

There are four metal options of the FireCone, bronze and titanium, investment cast in Oregon, and a high-carbon cast steel and a stainless steel model, cast in Korea. the fine investment cast detail (like a map of Oregon, the lettering on the bottom and just the quality of the finish and its unprecedented durability make it something worth admiring as art, as well as being super functional.

The biggest difference between stainless and carbon models is the rusting. Carbon models will develop a surface rust in an oxidized reddish brown pattern, whereas stainless doesn’t rust. There is always the fear with stainless steel that it could get brittle after many fire cycles, but the testers and manufacturers haven't been able to break one, nor could I.


They have been left in woodfires fire at least 50 times, run over by a truck, and then hit with a 35 ton wood splitter. Apparently with a little wire brush work or rub it in the sand the patina finish is incredible, I look forwards to seeing that myself…. but the carbon model will form surface rust. I'm going to season mine as I would any of my cast iron cookware. It may smoke a bit when I start them, but it will be cleaner to store.


Designed as a virtually indestructible alcohol burner that is tunable to start fires or make heat without smoke, soot or ash, he FireCone certainly lives up to all expectations. The fact that the adjustable inlet ports that provide tuning of the flame to various fuels and burning conditions is a real delight, and gives you considerably more control over your fire, without sacrificing the superb robustness of a two part cast metal tool. I'd barely even count it as "moving parts" as far as maintenance goes. Even with the base alone you get great utility but don't get a tunable flame. I can see it working as a base to cook off, and when inverted, the cone part might just be stable enough to use as a trivet.


As if you need to ask, why a titanium option? Being relatively light when compared to steel, it will heat up faster, and doesn't rust. Titanium withstands more heat and is more thermally stable than steel, which means if you expect to us it in arctic conditions it won't break, whereas carbon or stainless steel can become brittle and runs the risk of shattering.

Bronze is an age old, thermally stable, dense and hard material, making it perfect for rugged camp gear, but it's heavy. The four options break down into the following weights: bronze 780g (1.72lbs), the carbon and stainless (420ASTM) steels 710g (1.58lbs) and titanium a mere 400g (0.89lbs).

A couple of notes. Fire is hot, fire burns. Liquid fuels can slosh, spill and run. Running fire is bad. Always us caution with a liquid fuel and don't explode. Once it's been going the FireCone really heats up and retains that heat, so be advised when you've had it going and want to re-fuel it. The same vaporisation effect that makes it burn so cleanly, also works again t you when refuelling. Depending on your liquid-fuel, the conditions are in and the fuel wood you are trying to light, you may need to do a top up to get a really good burn going, so be aware, and be safe.




I've had a lot of fun trying mine out, burning methylated spirits mostly, but I also tried it out with a slosh of my Overproof (52%) Captain Morgan's dark spiced rum, which burnt with a delightful smell and cheerful light, but with the expected "why is the rum gone?" regrets. I started a little fire with it with no problems, and it certainly lives up to expectations.

Review: Mininch - Mini tool Pen and Tool Pen

Seen first on Breach Bang & Clear, here:

I am all for small, modular and resilient tools, and there comes a time when you just need to have a handy stealthy tool ready to go.

This is the Mininch - Mini tool Pen and Tool Pen set which I picked up via Kickstarter.

I opted for the full bells and whistles set, which included all the extra hex bits and both the new mini-tool pen, and the original tool pen.

They are for sale, live, here:

The mini-tool pen is milled from 6061 aluminum, sand-blasted finish. The tool itself measures 133.5 mm  / and is 12.8 mm in diameter  and weighs 46 g (with 5 bits inside).

•  The bits are S2 tool steel and measure  35.6mm  long and 7.1mm in diameter. They weigh a mere 4.5 g apiece. The tool Pen mini comes with 18 bits: 
• Slotted Bits (Flat): SL1.5, SL2, SL2.5, SL3
• Phillips Bits: PH00, PH0, PH1
• Hexagon Bits (Hex): H0.9, H1.3, H1.5, H2 
• Torx Bits (Star): T5, T6, T7
• Torx Security Bits: TR8, TR9, TR10
• Square Bits: S1
• SIM Eject Tool: 0.8
• Pentalobe Bits: P2, P5, P6

The classic Tool Pen is made of the same 6061 aluminum, sand-blasted finish as the Tool Pen mini. It does however weigh 93g (with 6 bits inside) and measure up a hefty 150mm in length and 17.5mm in diameter.
 
Both tools are offered in Snow Silver, Gunmetal and Champagne Gold anodization finishes. I chose gunmetal because of reasons, ha!

The bits for the classic tool pen are 36mm long and 9mm in diameter   and weigh 7g each. The bits are not cross compatible between the tools, but given the ranges of the two, thats not really a problem.
 The classic tool comes with:

• Slotted Bits (Flat): SL3, SL4, SL4.5
• Phillips Bits: PH1, PH2
• Hexagon Bits (Hex): H2, H2.5, H3, H4 
• Star Bits: T10, T15, T20, T25
• Imperial Hex Bits: H5/64, H3/32, H1/8, H5/32
  
• Robertson / Square Bits: S1, S2, S3
  
• Pozidrive Bits (Pozi): PZ1, PZ2
  

Both the Tool Pen classic and the Tool Pen Mini feature magnetically closing caps, and a really interesting tool seating and shifting system.

Inspired by “Pop-A-Point” rainbow pen & mechanical pencil,  the bits all sit within the tool, in hex-shaped lanes, each nesting into the base of the one above it, and held in place, top and bottom, but a steel ring, much like a press-stud is. You shift the bits by feeding another bit up from the back end, and along they go.  Each bit has the sheer support of the hex-shaped tool to support it internally, so they are really effective. You do need a full pen's worth of bits to make them effective, however.

Cut-out windows in one face of the tool allow you to see the contents and order of the bits stored within, using a very clear icon engraved on the side of the bit. The magnets in the caps don't interfere with the bits, although they don't really effectively allow you to store the caps when using the tools.

Between the range of bits offered, and the ease in which they all store, either internally for your most-often used sets, or in the solid, flip-top bit cassettes you can get a pretty wide range of tools in a very dense package with either of these tools, doubly so with both.

This is super useful when traveling, especially overseas, when you might find yourself needing to get into something, fix, repair or open some technology that you can't reliably ask someone else to do so, and having a fully decked out specialty screw-driver set is simply brilliant.

Review: Tritensil

My good friend Spencer of SAR Global Tool put me in touch with a maker-buddy of his, Jeff Busboom of JM Boom Concepts who has a nice eating tool which has just come onto the market. This is the Tritensil.

The Tritensil is made from food grade Nylon 66 which is the same material that Cordura fabrics are spun from, which means that it is not only light weight but virtually indestructible in normal use. These 17cm (6 3/5") long utensils which are 3cm (1 1/4") wide at the head, and 2cm (3/4") wide shaft it seems to be a bit wide in the hand, but comfortably so, at only 20g (0.7oz). Thats a lot of utensil for not much mass.



Tritensil provides the full capabilities of a fork, spoon and knife in a two piece set. Not only are the fork tines protected from damage while nesting inside the spoon bowl but the very clever design keeps the two Tritensil pieces snuggly secured to each other, eliminating the tell-tale clink-clank of metal cutlery as well as minimizing the chance of loss.

The spoon/knife portion has ridges along the outside edges when then ride along the internal rails of the fork to for a surprisingly secure combo. The fork tines can stick out a little, but are protected from the twisting/, snagging dangers that plastic-wear often suffers from in packs.

The interlocking design also allows the Tritensil to be configured into an extended Spork by flipping it around an slotting them together, almost doubling the overall useable length for those times you may find yourself eating out of a pouch. No more sticky hands and you plumb the depths of a mylar redoubt.

I also like not having to put a utensil down when eating, so doubling it over like this allows you to eat unmolested without dropping your eating tools in the dirt.

The eating tools are equipped with a 4" ruler, as well as a hole for either a lanyard or a slit ring to retain it. The width of the Tritensil makes it ideal to slip into a PALS/MOLLE channel.

The knife will cut steak, the Tritensil will stack and store, its basically a full set of plastic cutlery that will have you covered. When you compare it to even a set such as the Mountain Design Alpha set, it's really a good step up.

For back-country, deepest darkest forests, cliff-side or crowded and sneaky-handed hospital break-rooms meals, you wont go wrong with a set of Tritensil's.

Review: Propper - 7X5 Pocket Carry Organizer

As first seen on Breach Bang & Clear:

I took a trip with my family to Bali, Indonesia recently to attend my mother's wedding, and it turned out to be an excellent opportunity to put to good use of of the kit that the good folks at Propper had sent me that had been kicking around the bunker.

I wanted something that would keep all my travel documents together, safe and secure and it seemed the perfect fit.

This is the 7X5 Pocket Carry Organizer and here's what I can tell you about it.
Fashioned from the same highly durable Cordura that all the Propper packs and bags are made from, and all the fittings are equally sturdy.

 Named for its primary dimensions the organizer is 7" x 5" x 2"and has twin zippers which open like a book around its two short sides and one long side. The zipper pulls are silenced by being cord-pulled,  to reduce its lines even further.

I really liked the wide loop of webbing that is fitted to the back side, which you might think would get in the way more than would be useful, but it was really good for those long immigration and customs lines, where I'd just as soon not have a handful of passports and tickets waving in the wind but also have a gird firm grip on. It was a long enough loop to be able to hook it over my wrist to give me two-hands free when I needed it. I'm secure enough not to worry about looking like I'm carrying a purse. It'd be a Propper purse, in any case, and that's not shabby at all.

It's no-nonsense lines make for a very unobtrusive package, and I found that it completely vanished into the folds of packs I stowed it in, and also fitted nicely in the cargo pockets of my travel-pants.

The front of the organiser is loop-fronted for adding morale or ID patches. I threw a nice subdued Australian flag on mine, for peace of mind, because it never hurts to get an eye-roll from security and customs ("uuugh, Ahwstrahllians, you go, go!") when you look like I do, some times.

The rear of the organiser has a stow-pocket set high up, perfect for boarding cards and customs forms, and also features two rows and three channel PALS/MOLLE, to either add extra things to, or to secure the organiser to other packs. I didn't see much utility in this though, and other than maybe a pen, I can't see what I'd use the MOLLE for.

Inside the organiser, both faces are loop-filed covered, to affix an internal organiser such as the included 7x5 elastic organizer panel . There are also two thin elastic loops in the seam, great for fitting a pen you'll always find you need to fill in travel forms.

I am usually pretty paranoid about my travel documentation, we have a long standing family history of losing passports, so I am always very cautious of the movement of these documents, so having a safe, secure and most importantly unobtrusive pouch for them was perfect for my wild and wary tribe.

Sneak Peek: SOG Instinct Mini Fixed Blade knife

As first seen on Breach Bang & Clear

I was sent a cool little knife by the good folks at SOG, and I wanted to get my initial thoughts on it out there. I'm a fan of little knives, because they have a lot more close in utility when doing chores and around-the-bunker tasks. You don't always need a machete to cut into your MRE's, nor a "that's not a knife, this is a knife" to get your point across. Especially if you don't want to cause a scene. Be a gray man, not a rain man .... There is plenty that a 2 inch blade can do, if you've the skill and initiative, so you don't need to feel inadequate when packing a little something. Especially if you're putting it in a boot, or a pack-strap. Save the save on your hip for a tree-chopper.

The SOG Instinct is a compact, wearable fixed blade knife that is made just for those times. This is a little skeletonised blade, that measures a mere 12.2cm (4.8") with a 4.8cm (1.9") blade, with a thickness of 0.4cm (0.16") and it weighs only 31g (1.1oz) and made from a very reliable 5Cr15MoV steel. It comes with a slight clip point, which makes for easy re-sharpening when it comes time, and a molded hard nylon sheath, which is fitted with several mounting options, including an adjustable and reversible belt clip.

This is sweet little blade, and I look forwards to giving it a more through trial in the near future.

Wish-Lust: Weltevree - Groundfridge

I saw a very cool article on "If it's hip, it's here" which covered an award winning Dutch design company's new product, a passive refrigeration system and a modern take on the age-old root-cellar concept.

They're not unlike the pre-made storm-shelters that have become quite popular in tornado and hurricane prone areas in the US, and even the tsunami pods that came to world attention following the 2011 Tohoku earthquakes. These are a far more sedate creation, with a far more pastoral aspect of food and produce storage. This is the Weltevree Groundfridge.

It is an ingenious way to provide an affordable, insulating, cooling and storage system for wine, fruit, vegetables and cheese. It is a modern, pre-fabricated root-cellar which can hold as much as 20 standard refrigerators, without the use of electricity and uses the insulating effects of the soil and water to keep the internal temperatures at between 10 and 12oC (50° and 53°F) throughout the year.

This airtight, water-tight, vermin-resistant and ventilated system (the ventilation system supplied can be operated remotely using an app) which also monitors the temperature and humidity within the Groundfridge. Being a small design company, their products are mostly small-production oriented with the polyester shell being hand-laminated and are fitted-out with a wooden handrail and shelving. Other options they offer include LED strip lighting and built-in cabinetry.



The Dutch based Weltevree will transport and deliver the Groundfridge locally, dig it in and cover it up with the very soil taken from its new lodging place. This covering layer of soil ends up being about 1 meter thick and has ample insulating properties for a steady core temperature within the Groundfridge as subterranean water provides additional cooling. Depending on where you live, there may be an added benefit: installing the Groundfridge may require no permit, and when digging it in, because all the excavated soil then becomes the covering, no soil need be carried off of the premises.



The Groundfridge has a storage capacity of 3,000L and will store around 500kg (or 1,102lbs) of food (Weltevree suggests the harvest of a 250 m2 vegetable garden). That’s enough to prepare 350 meals for a family of 5. its main diameter is 228 cm, (7'5") and weighs 300 kg (660lbs). So it is a significant piece of construction.



On average, 20 A grade EPC (Energy Performance Certificate) Refrigerators combined, use 6,620kWh per year, whereas the Groundfridge performs the same feat completely without any electricity. The autonomously functioning underground root cellar with a constant temperature of around 10oC. You'd need to be sure about your local water-table, including seasonal variations, because it would be terrible if it broke free due to raising water-tables, and some areas might have different subsurface temperatures.

That said, this looks like a really cool idea, and I'd love to have one myself.

Review: Fishbones - Gravity Hook (production)

Production on the left, prototype on the right

I covered the original release of the prototype Gravity Hook back in March, when the prototype was sent my way by the guys from FishBones. Not long ago the final production version of the Gravity Hook arrived, with some improvements.

The Gravity Hook is a combination grappling hook, and gravity claw. (Here's their promotional video...) By removing the middle cross-bar the more than serviceable grappling hook can be quickly converted into a claw-machine like grabbing claw. The clever design allows you to swap between these two features in just moments.

Production on the right, prototype on the left

The whole assembly weighs around 360g in its stainless steel configuration, a complete assembly includes 3 links, 3 "hammers", a cross hook, and hardware, in bolts and self-locking nuts.

One of the production improvements is the notches cut into the throat of the hammer, these allow the cross hook to seat much more securely that in the prototype, where it was held in place solely via the notch cut into top of the cross hooks. 

Production on the right, prototype on the left

The stainless Gravity Hook is made out of 1/8" thick 304 stainless steel and all of the Gravity Hooks hardware hardware is also stainless. When the hook is fully open, the 1.5" mouth will hold over 165lbs when biting into a 2x4.

When fitted, the cross hooks set in the jaws of the hammers, the Gravity Hook up as a quite effective grapple. The jaws are held in place and stopped from opening the by the twin o-rings which seat in a set of notches cut into the link pieces, and hold the jaws surprisingly tightly.

Production on the bottom, prototype on the top

 Given their design, any the pull on the tines of the hook only act to pull it further closed, the effect of the o-rings is really quite sufficient.

FishBones have suggested that an after market modification, drilling a hole in the middle of the hammer arms to fit a locking pin, for extra security, but so far, I haven't felt the need myself.

The bolts and locking nuts supplied with the production model are a much slimmer profile than the nuts and bolts I picked up at the hardware store, that was a big help.

The production version has nicely rounded notches cut into the links, where as the prototype version is rather a bit more rough making it rougher on and harder to remove the o-rings.

Production on the right, prototype on the left

One of the other backers of the Gravity hooks asked if they wanted to use it as a boat anchor for an inflatable lake boat, how they would dislodge it should it hook onto something on the bottom. Another backer suggested it could be set up with a failable style link like this  where if you pull hard enough the top link breaks and lets you pull the anchor from the bottom. A second way would be to use 2 ropes; one attached to the shackle, and the other looped through the claw to act as an emergency release in case the hook snags.


Here's me testing the grappling hook


Here's me testing the claw feature on a variety of dropped gear.

Two kinds of cross hook: plain and gear-tie batarang!

 You might ask "what makes it high performance?" well, this is probably a matter of its features:

• It can be used either as a 2 or 4 pronged grappling hook.
• In the claw mode it "bites" objects that might slip out of a grapnel.
• Compact enough to be stowed on a back pack strap, by clamping the jaws over the strap and feeding the tail end through a loop
• Can be dismantled into its base components for more compact storage. 
• It's available in stainless steel, titanium or even non metalic Derlin.

There are also two options for the cross hooks, with the classic solid hook, as well as a version with cut-aways, both lightening the cross hook, and also offering a place to use it as a gear tie, not unlike the FishBones and Piranha gear ties these guys came to the front with. 

Ss, you have a very cool tool in the Gravity Hook, but what are its limits? Well, the Gravity Hook was specifically designed for retrieving. It has not been tested or certified to bear human weight. The makers strongly state that you should never use it in a situation where it's failure or dislodging might cause bodily harm or property damage. In a pinch though, it can certainly take a fairly hefty load: 

using the Gravity Hook as a bogged truck rescue tool

How do you get the Gravity Hook to release something whilst under tension?



Here's their testing underwater!


As well as being a really useful dropped-gear and treasure retrieving claw, and a sturdy and rugged grapple, the Gravity hook is also a really well made piece of engineering. I really appreciate its design and functionality. I've got a small CountyComm grapple, which is billed as a trip-wire clearer, but for bigger jobs, when you want to snag, yank and retrieve gear, or haul something you would do well with one of the FishBones Gravity hooks.

Better yet, the guys at FishBones have just launched a NEW project, the Gravity Hook XS, a pocket sized version, in just two-pronged format, on KickStarter. You should totally go check it out, and add some grabby, grapply goodness to your loadout.

Review: S10 Respirator Haversack

I wanted to go a little old-school for a bit, and cover some canvas era type pouches.


A while ago I covered an Australian issue butt-pack, that I had picked up a number of years ago, and this is along those lines. I managed to score a bulk load of retired stock in the way of pouches and bags, and these respirator haversacks were one of these.

These are British Respirator Haversacks which is NSN listed as 4240 99 800 9601.  They are designed to carry the S10 respirator. I don't have a S10, but do have a full-face 3M 6000 series mask that fits nicely. Whilst I say canvas-era, these are actually a Codrura type nylon, for all the hard-wearing, non mildew and water-shedding goodness modern materials offer.

The bag measures 29 x 26 x11 cms (11" x 10" x 4.5" ) and weighs 475grams. Lacking more modern PALS/MOLLE fittings, the haversack has a couple of different attachment and carry options. A twin-stud openable belt-loop, which also features a wire hanger, from the old ALICE style fittings.

A long nylon strap with a Fastex style buckle allows for a quick waist or shoulder slung carry as well, and there is even a secondary shoestring type cold to further secure the pouch around the waist if shoulder-carried, or around the thigh id hip-carried. The cold can be secured out of the way if not in use, or removed entirely.

One side of the pouch features a hook-and-look pocket, a good size for a survival tin, a GPS unit or other small items you might need in a hurry.

The inside of the haversack is quite spacious, fitting one each of the 1L and 2L Pathopak containers with plenty of room to move. The internal dimension really give you a lot of carry capacity, and the haversack itself it very sturdily put together.

Inside the haversack, as well as the main spacious compartment are several other interesting features.

One hook-and-loop closing front pocket, and two webbing and hook-and-loop holders. These just took the 1L Pathopak's and I expect they are designed to fit additional filter canisters for the S10 respirator.

They would certainly work to fasten and store a number of smallish items, and when not in use, being made up a webbing, will simple squash out 0f the way.

The front pocket has a small hook-and-loop fixture, and features broad pockets sewn in, to fit  NBC combo-pens, morphine syrettes, first aid kit, gloves and the like. They are made of the same material as the rest of the haversack, and whilst if they had been elasticized it would have been good, they probably work just fine in conjunction with the flap.


Even the top of the haversack's lid has some features, as well as the press-stud and hook-and-loop lined lip, there are twin bands of elasticized webbing, to allow you to affix a number of small items like more gloves, a first aid kit or the like.

These may not be flashy and new like a lot of other high-speed gear thats coming put, but they are rough, rugged, dependable and spacious.

If you have some bulky gear you want to have at hand, and in your ruck is just too far away, or perhaps you want to be able sling it to a buddy, stash it under a fuel depot or just need to fit your respirator ... the S10 haversack might well suit your needs.

I've got quite a few of them, and will be listing them on www.tacticalcoyote.com soon.