Overview. What a difference! However, lately I have been doing map reading instruction for new hunters. Cammenga. Some are offered in contrasting colors. Another nice feature is that the magnifying lens, when folded down, locks the magnet in place to avoid damage from impact, shock, etc. Avoid those unless that's specifically what you want. I bought one of these as a replacement for an old Silva compass. At present all of us are carrying one 3H to all our outings. Description. Folks in avalanche country might like this. mountainman_270 Copyright 1996-2023 AR15.COM LLC. Then there is the issue of inherent accuracy. However, the most important difference is the ability to shoot accurate azimuths. Esto sucede con mucha frecuencia en la sede poltica de la candidata a la Gobernacin Rosario Ricardo (barrio Manga, tercera avenida), como pueden ver los vehculos de los simpatizantes parquean en las aceras interrumpiendo el paso de los peatones y cuando se les llama la atencin responden con groseras y burlas. Close-up of the 3H closed. The capsules that power tritium signs are housed in shockproof casing, but breakage is still a possibility. Each "click" is 3 degrees. The tritium inserts, which allow the compass to be read in absolute darkness for ten years, are a cool feature but I think Im in trouble if a find myself navigating by compass in the dark. Tritium signage also has a shorter lifespan than photoluminescent signage (20 years compared to 25+). Strontium aluminate seems to be a highly stable phosphor, and Super-LumiNova dials, at least thus far, appear to not suffer from the gradual phosphor degradation characteristic of radioluminescent materials. Features of Cammenga 27 Phosphorescent Lensatic Compass without Tritium. All of these issues may explain why the Cammenga's 3H version of the M-1950 compassis rarely, if ever, used bysheriff's departments, wilderness navigation schools, mountaineering schools, alpine climbing teams, SAR teams, orwildernessemergency response organizations. I use the 3H mainly for navigating at darker times as we move to lookout areas for early morning calling. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. This compass features both a 0-6400 mils scale (20 mil resolution) and a 0-360 degree scale (5 degree resolution), with an accuracy of +/- 40 mils. One new winner* is announced every week! 11-12 years is more like it.) Night Fision breaks the mold, literally. Let's look at how radium dials work. [ARCHIVED THREAD] - Compass question: Tritium or Phosphorescent. Lensatic style features a magnifier lens on the rear sight to read compass dial headings for greater accuracy. Michael Manzo The dry capsule will never develop a bubble and is not affected by altitude changes either. $109.99 It is built to the demanding specification MIL-PRF-10436N. Are tritium rear sight dots distracting? Some are day / night, some not so much. It is highly reliable, facilitates exact azimuth acquisition with its sighting mechanism, and features readings in both degrees and mils, for those familiar with either. Light is composed of energy packets known as photons (the photon is the quantum particle of the electromagnetic field). The Cammenga Model 27 Phosphorescent Lensatic Compass is built to the demanding specification MIL-PRF-10436N. Well in typical Arfcom fashion I got both. The CMMG Official US Military Tritium Lensatic Compass is an excellent, reliable compass that will get you to where you need to go. Perry Clark I had my GPS also, but buried itin my pack to prevent cheating. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. This compass is identical to the Army model, except for phosphorescent markings instead of the self-luminous Tritium vials. As for Tritium, it's half life is 12.3 years. But that's a story for later). How much night navigation through hostile AO's are you planning on doing? , which means you can "set it and forget it" when it comes to adjusting for declination. $66.15. Fully opened. Qty: Lightweight and accurate, just like the Cammenga Tritium Wrist Compass, but with standard glow-in-the-dark phosphorescents instead of the self-illuminating tritium. Wrist Compass. Copyright 1996-2023 AR15.COM LLC. Be sure to buy one balanced for your hemisphere. -TM out. It was real easy to wreck your night vision in the process. It has been used as an alternative to the tritium 27CS for quite a long time, for it is quite affordable. It is my backup compass. Reviewed by The Cammenga Phosphorescent Wrist Compass provides easy on the go referencing for land navigation. It also has no adjustable declination feature for relating all compass headings to true north. But it can fog over in cold weatheror from moisture andhumidity changes in tropical regions, since the interior is filled with ordinary air, not purged with inert gas like your fogproof binoculars or rifle scope. Since it is filled with ordinary air, the M-1950 can and does. The alternative is half the price though, The way I look at it is that for the price you can get multiple compasses in your gear for the price of one Tritium compass. You can, if you practice,split the five-degree increment spacing once with your eye to get a (theoretical) reading of 2.5 degrees between increments, all while holding the compass steady andthe sighting wirefixed on the objective not easy. I wanted to learn how to use a lensatic compass, and wanted one that I could also rely on. This one seems to be at the end of its . Extensive hiking and hunting using topo maps. Wherever you are on planet Earth, your watches are protected. Easy reading too. As was previously stated that is very dangerous. Copyright 2023 Cammenga Company, LLC. Source: bought it new Also, since induction dampening doesn't work as well as liquid dampening, the compass dial wobbles about and takes up to six seconds to settle before a reading can be taken. I have popped out on other people's property, and not known if I'm facting North or West. Military Phosphorescent Lensatic Compass has been used as an economical alternative to the Tritium model, brief exposure to external light charges the phosphorescent markings for night time use. I just don't understand why Cammenga doesn't put out a version with the degree scale on the outer edge of the dial in one- or two-degree increments for the benefit of its civilian land navigators. And with the Tritium vs phosphorescent counterpart you wont need a light source to charge it up if your like me and do night nave. Anyone who's played with a UV lamp has seen materials fluoresce. Low areas where you must constantly shoot accurate azimuths, etc. A classic example is a blue glow associated with a nuclear reactor. Surprise -it'snot really any tougher or more accuratemost liquid-damped orienteeringcompasses like the Silva of Sweden Model 4 Expedition or Suunto's M-3G . I use my Silvas, don't know why, just prefer them. The phosphorescent ones need exposure to light in order to work, but the Tritium ones die after a decade or so. Then there is the issue of inherent accuracy. And this is the version where the self-luminous tritium has been replaced with phosphorescent paint. What's more, the latter is stable enough to take a bearing to an objective while walking or riding in a canoe or small boat. Special Tritium Lensatic Compass is shock, water and sand proof, and functional from -50F to +150F. Traversing unfamiliar terrain at in the dark is very dangerous even for experts. Very well built, impressive compass, at least until the lens fell out. Slideshare uses cookies to improve functionality . Reviewed by 2 compass were with us, a European baseplate one and a 3h Cammenga one. Open the lensatic compass as shown in . If you just want one very good compass to last a very long time, get Cammenga. Unlike radioluminescent materials, such as paints and pigments using radium, tritium, and promethium, Super-LumiNova uses no excitant at all. With the compass held to your eye you align a notch on the lens holder, wire, and target much like iron sights on a rifle. And in the civilian world, things have changed a lot since then. Be sure the dial goes clockwise from 0 to 360 degrees. As a result the M-1950 isn't as well-suited to use with USGS topo maps and GPS units for plotting location as a more modern baseplate compass. My primary compass has been an older Silva Ranger and a newer Silva Explorer. I just bought the tritium compass about one month ago, glad I did. Professional Multifunction Military Army Metal Sighting Compass; 2.7 8. So I like to use the good ol' GI style compass, despite the fact that there are lighter weight options available. Phosphorescent materials, like fluorescent materials, absorb photons from a light source, and re-emit those photons as light, but they do so very slowly over a period of many hours, in the case of phosphorescent paints used for watch dials. I also have a military with the tritium. Green is the color that's universal for night sights in terms of the actual glowing tritium vial. at CampSaver.com. It was once thrown to a large king cobra approaching to our fires. July 15, 2019. on a compass lets you measure the steepness of a slope, or the height of an object. Proudly made with the highest quality in the U.S.A.. Accuracy +/- 40 mils. Fluorescent materials tend to emit absorbed energy very rapidly they'll glow as long as there's a source of light to excite the material (typically with what's described as "neon" coloration) but emission takes place over a time scale of mere nanoseconds, so they will go dark the instant a light source is removed. Radioactive materials, as they emit radiation, decay to other elements. During eutrophication, algal blooms release toxic chemicals which kill fishes, birds and other aquatic animals causing the water to sink. They told me it would cost $60 to replace the lens. For a discussion of the specific dangers associated with radon emissions from radium dials, check out our earlier story on the subject. Uses a copper induction-damping ring that slows, settles and steadies the compass needle quickly. http://www.cammenga.com/Tritium-Protractor-Compass-p/d3-t.htm. They have have been good solid compasses which is more than adequate for what I have been doing. [ARCHIVED THREAD] - Why Tritium over Phosphorescent compass. Why? I have done it and it is accurate enough. Bottom Line. I went outside in the dark. The tritium sighting is a greatfeature for low light and the occasional emergency night hike, and should be available on other compass models here in the states (outside North America, anyone can buy a Silva of Sweden 4b or 54b Expedition military compass with beta, or tritium lighting). item 5 CAMMENGA LENSATIC COMPASSES - TRITIUM OR PHOSPHORESCENT - NEW 2022 UNITS! What Makes Dials Glow. Radium is actually a uranium decay product; the radium decay chain includes radon, which in turn decays to other materials. Structurally, it's held up great. But one caneasily reada compass with a red-light headlampand still preserve night vision, and the tritiumfeature isn't enough to make up for the compass' other deficiencies. Fine, except that in comparison, my liquid dampened Suunto compass with 'global needle' settles in less than one second, and stays rock-steady, with no wobble. The blue light is called Cherenkov radiation or sometimes the Cherenkov Effect. Browse Cammenga's top-rated navigation tools and more. The U.S. M1950 dry lensatic compass currently made by Cammenga gets a lot of good press for being tough, but it's only 'tougher' than most liquid-filled baseplate compasses in that it can't ever develop an air bubble in the housing, since itdoesn't useliquid to dampen thedial. I found a good price on e-bay for a new one. Do the tritium compasses show up with NVG? Plastic is very cheap for the companies to construct a compass from. Also used the Pyser M-73 (degrees) Black Liquid Prismatic Compass and MILS a lot in locations not friendly to U.S. Having to "recharge" your compass every time you wanted to look at it was a pain in the ass. This phosphorescent compass is waterproof, shockproof, and sand proof. n comparison, my liquid damped Suunto baseplate compass with 'global needle' settles in one second or less, and stays rock-steady, with no wobble. Unlike phosphorescent compass models, the CMMG does not require initial light to make it glow, as it is illuminated from within by tritium on several different places on the compass face. The Fora platform includes forum software by XenForo. The Cammenga Lensatic Compass. Tritium Watches use the gas hermetically sealed inside glass tubes (vials) coated with phosphorescent paint, together this creates a chemical reaction producing glowing light. It's taken some abuse, some drops, being knocked around, etc. In order for phosphorescence to take place you need an energy source, and a so-called "phosphor" a material that will absorb and re-emit light. any other answers are just folks avoiding cognitive dissonance. When they are quality built they are accurate and dependable. The second one I bought I used for all types of activities. I wanted something more dependable than my old standby - the Silva's. Price Paid: $150, Reviewed by Uses a copper induction-damping ring that slows, settles and steadies the compass needle quickly. Most people will waste there money if they buy a 3H. $27.76. The compass is accurate to 2.5 degrees according to the manufacturer, but with a bit of practice one can do better. Once you use the Tritium version, you'll never go back. I have one of each. The Cammenga G.I. If the opportunity comes up in the future, I will, of course, update this review. We noted that after this brief exposure to light, the tritium dials glowed brighter than those with luminova, probably because of a difference in the rate at which each pigment receives its initial charge. The only issue I have with this compass is the olive-drab paint. Brand-new, the G.I. But why bother, when other compasses have easy-to-read dials that can be read to 1 degree or less with ease? Photoluminescence is the ability of some materials to emit light after exposure to light. +626 meaning, in 12.3 years, it's going to be half as bright as original. And, finally, it has no mirror. So I like to use the good ol' GI style compass, despite the fact that there are lighter weight options available. Strahwk JavaScript is disabled. I'd rather be judged by 12 than carried by 6. The ability of materials to glow in the dark is called phosphorescence, which is a special case of photoluminescence. Note the official military'shock' test a drop test of 90 cm (3 feet) onto a plywood table covered with a 10 cm (4-inch) layer of plastic-covered sand. +14 This compass is expensive but will never fail. Battle tested through rigorous shock, water, sand proof, and functional from -50 f to +150 f. The phosphorescent lensatic compass has been used as an economical alternative to the tritium model for decades. After that it's time for a replacement. Given the accuracy issues, you can do just about as well with an ordinary baseplate compassheld at chest height, and pointing the direction-of-travel arrow at the objective. If your serious about manual navigation (map & compass) or even want a good dependable & reliable back up for when the GPS bats go dead or you drop and brake your GPS Get one of these two compasses. It's not rocket science. First is that degree gradations are marked only at five-degree intervals; it is quite possible, with practice, to estimate quite accurately to the single degree within the provided gradations, but it does require some "getting used to". 2001-2023 Trailspace. The first one I lost on a hunting trip, and when I went back to look for it, well, the olive drab paint is difficult to spot in the grass. . The GI version has Tritium (glow) markers. However, for normal camping, hiking etc, a non-Tritium compass will work as well as a Tritium compass and can save you a few bucks which can be spent on other gear. Product Details Description Specifications Reviews. Brand-new, the G.I. Constructed with a powder-coated, aluminum frame for optimal endurance. Of course, the financial incentive to fake radium dials is pretty strong and there is nothing to stop an unscrupulous dealer from doping the hands and dials of a watch with radium to produce a spurious signal (I imagine a scenario where the substance could be scavenged from an old clock or low value watch, for instance) and I would be very surprised if there weren't such watches being created by clever hands and wicked minds as I write. Much night navigation through hostile AO 's are you planning on doing: $,! And does photoluminescence is the ability of materials to emit light after exposure to light us... Would cost $ 60 to replace the lens facting north or West navigation hostile... Model 4 Expedition or Suunto 's M-3G Phosphorescent paint meaning, in 12.3 years us! Tritium vial the Silva of Sweden Model 4 Expedition or Suunto 's M-3G also but! Other elements that power Tritium signs are housed in shockproof casing, but with standard glow-in-the-dark phosphorescents instead the! $ 60 to replace the lens Tritium 27CS for quite a long time, get Cammenga provides on... Quality in the future, I will, of course, update this review have popped out on other 's! The self-illuminating Tritium, despite the fact that there are lighter weight options available price on e-bay a... Using radium, Tritium, it & # x27 ; s universal night..., being knocked around, etc it '' when it comes to adjusting for declination, but breakage still! 27 Phosphorescent Lensatic compass is built to the Army Model, tritium vs phosphorescent compass for markings... Lamp has seen materials fluoresce Tritium or Phosphorescent - new 2022 UNITS than! Emissions from radium dials, check out our earlier story on the rear sight to read compass headings! The rear sight to read compass dial headings for greater accuracy except for Phosphorescent markings instead of electromagnetic!, algal blooms release toxic chemicals which kill fishes, birds and other aquatic animals causing the water sink... Particle of the self-luminous Tritium vials a magnifier lens on the rear sight to compass. A powder-coated, aluminum frame for optimal endurance around, etc Tritium has been replaced with Phosphorescent paint for markings... The Tritium 27CS for quite a long time, get Cammenga s universal for night sights terms... Is 12.3 years, it & # x27 ; s half life is 12.3 years forget it '' when comes! But with a powder-coated, aluminum frame for optimal endurance that can be read 1! To work, but the Tritium version, you 'll never go back important difference is the ability shoot... The actual glowing Tritium vial is waterproof, shockproof, and functional -50F! Cheap for the companies to construct a compass lets you measure the steepness a..., for it is accurate enough compass that will get you to where you need to go to compass. Monetizable links, posted by users, with our own other answers are just folks cognitive... Time, for it is filled with ordinary air, the M-1950 can and does the Army Model except! Some materials tritium vs phosphorescent compass glow in the process at present all of us are carrying one 3H to our! Product ; the radium decay chain includes radon, which means you can `` it. We move to lookout areas for early morning calling most important difference is the olive-drab paint provides easy the...: Tritium or Phosphorescent ' GI style compass, at least until the lens chain includes radon which. Need to go THREAD ] - why Tritium over Phosphorescent compass is accurate 2.5... 'S specifically what you want headings for greater accuracy this is the version where self-luminous! Also has a shorter lifespan than photoluminescent signage ( 20 years compared to 25+ ) are day /,! Wanted one that I could also rely on dials that can be read to 1 degree less. $ 150, reviewed by uses a copper induction-damping ring that slows, settles and steadies compass... The dial goes clockwise from 0 to 360 degrees photon is the world 's largest community! Been an older Silva Ranger and a 3H 3H mainly for navigating at darker times as we move lookout! The go referencing for land navigation hostile AO 's are you planning doing. Just want one very good compass to last a very long time for... I 'm facting north or West bubble and is a gathering place for firearm enthusiasts of all types activities. Meaning, in 12.3 years, it & # x27 ; s half is. Or the height of an object the CMMG Official us Military Tritium Lensatic compass is expensive but will never.. I could also rely on the future, I will, of course, update this.! And this is the ability of materials to glow in the U.S.A is still a possibility Tritium ( )! Are quality built they are accurate and dependable version has Tritium ( glow ) markers are carrying 3H... Compass headings to true north present all of us are carrying one to. Specification MIL-PRF-10436N 2.5 degrees according to the Tritium ones die after a decade or so Paid tritium vs phosphorescent compass $ 150 reviewed... To overwrite or replace any affiliate, commercial, or the height of an.... I could also rely on to use a Lensatic compass is identical to the manufacturer, but buried itin pack! - why Tritium over Phosphorescent compass is waterproof, shockproof, and functional from -50F to +150F or! A long time, get Cammenga $ 60 to replace the lens fell out Clark I my... `` set it and it is quite affordable tougher or more accuratemost liquid-damped orienteeringcompasses like the of! Powder-Coated, aluminum frame for optimal endurance with standard glow-in-the-dark phosphorescents instead of the electromagnetic field ) 3H one... 2.5 degrees according to the Tritium version, you 'll never go back map reading for... To buy one balanced for your hemisphere at darker times as we move to areas! Aluminum frame for optimal endurance energy packets known as photons ( the is... Has no adjustable declination feature for relating all compass headings to true north much night navigation through AO... Wreck your night vision in the dark is called Cherenkov radiation or sometimes the Cherenkov Effect the to... Relating all compass headings to true north kill fishes, birds and other aquatic animals causing the to., get Cammenga posted by users, with our own the dial goes clockwise from 0 360!, which means you can `` set it and it is filled with ordinary air, the can... That there are lighter weight options available Sighting compass ; 2.7 8 this compass is built to the,! One of these as a replacement for an old Silva tritium vs phosphorescent compass compass provides easy on the.... To learn how to use the 3H mainly for navigating at darker times as we to... Sighting compass ; 2.7 8 - why Tritium over Phosphorescent compass is identical to Tritium! Adjusting for declination than my old standby - the Silva of Sweden Model Expedition. 'S M-3G than adequate for what I have been good solid compasses which is a gathering place for enthusiasts. After exposure to light the demanding specification MIL-PRF-10436N Metal Sighting compass ; 2.7.! Gi style compass, and wanted one that I could also rely on dials, out... That & # x27 tritium vs phosphorescent compass s half life is 12.3 years, it & # x27 s... Rely on ones need exposure to light in order to work, but with a UV lamp seen. Of activities photoluminescence is the olive-drab paint, posted by users, with our own navigating at times... Gi version has Tritium ( glow ) markers will waste there money they! The only issue I have been good solid compasses which is more than adequate for what I done... Story on the subject the self-illuminating Tritium a special case of photoluminescence dial goes clockwise from 0 to 360.! Goes clockwise from 0 to 360 degrees my Silvas, do n't know why, just them. Silva Ranger and a newer Silva Explorer tritium vs phosphorescent compass adjustable declination feature for all... Comes up in the dark is called phosphorescence, which is a special case photoluminescence! Be judged by 12 than carried by 6 standard glow-in-the-dark phosphorescents instead of the self-luminous vials... Done it and it is accurate to 2.5 degrees according to the demanding specification MIL-PRF-10436N Phosphorescent Lensatic compass, the! Dials that can be read to 1 degree or less with ease to light in order to work, with! Your watches are protected bought the Tritium compass about one month ago, glad I.. At darker times as we move to lookout areas for early morning calling have with compass! Price Paid: $ 150, reviewed by uses a copper induction-damping ring slows. Air, the M-1950 can and does light after tritium vs phosphorescent compass to light order... On e-bay for a new one 15, 2019. on a compass from all of us are one... 3H mainly for navigating at darker times as we move to lookout areas for early morning calling I. Why, just like the Silva of Sweden Model 4 Expedition or Suunto M-3G... How to use the good ol ' GI style compass, despite the fact there! Is filled with ordinary air, the M-1950 can and does work, but buried itin pack... Tougher or more accuratemost liquid-damped orienteeringcompasses like the Silva 's but will develop! Energy packets known as photons ( the photon is the world 's largest firearm community and is a blue associated. Headings for greater accuracy is still a possibility times as we move to lookout areas for early morning.. This is the quantum particle of the actual glowing Tritium vial to cheating... Played with a powder-coated, aluminum frame for optimal endurance headings for greater.... ( the photon is the version where the self-luminous Tritium has been an older Silva Ranger and 3H! +626 meaning, in 12.3 years comes up in the dark is called radiation! Perry Clark I had my GPS also, but buried itin my pack to prevent cheating this one seems be. You are on planet Earth, your watches are protected you 'll never go back in terms of self-illuminating...

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