Source: bought it new It is chipping off on the corners. Oh shit I didn't know the phosphorus wore out too and faster. 'To truly kill a man, take away his purpose in life' - Anonymous. That's extremely helpful. Since it is filled with ordinary air, the M-1950 can and does. Oh, one other thing, with this compass, you're going to need to carry a protractor. The aluminum body is durable and will handle rough travel, but remember it's a compass, not a hammer, so treat it well and it will serve one for life. As far as learning how to employ the 3H, instruction or a good youTube source would be very helpful getting started. I really don't see myself navigating in the dark. As with radium dial watches, the fluorescence should fade quickly when the light's turned off. Then there is the issue of inherent accuracy. Night Fision night sights carry more tritium than the average night sight on the market and a domed lens engineered to create the a crisp, defined glow. Cammenga does an excellentjob on meeting milspec standards. Here in the Everglades where most of my back-country travels take place, we don't have much avalanche danger, so personally I don't care about a clinometer. Uses a copper induction-damping ring that slows, settles and steadies the compass needle quickly. I already have the phosphorus, and it works fine, but in less than ideal lighting conditions it requires external light to 'charge' the glow, and fades out in a minute or two. The earth's magnetic pull wants to pull one end of the needle down. December 27, 2009. Brand-new, the G.I. How does radium paint behave under a black light/UV flashlight? Product Details Description Specifications Reviews. These are great,rugged,water and shock proof..top of the line ..shelf life of about 14 years at top of its illumination. To do some map work in the dark to prepare for the following day I can accomplish with the phosphorescent compass just fine. :faint: A forum community dedicated to Glock firearm owners and enthusiasts. Well, skiing/snowmobiling in back country areas far from any man made land marks (no Virginia, they don't have cell phone coverage out there!). Brand-new, the G.I. My 159-page, fully illustrated book is yours for the asking. The lensatic compass has a sighting wire for "shooting azimuths" as accurately as possible. Cammenga Olive Drab Genuine Military Lensatic Phosphorescent Compass. Despite the name, these transitions still happen, but they're statistically unlikely and so the trapped light leaks out much more slowly than in fluorescent materials. It's cheaper. Reviewed by Radium emits mostly alpha particles (two protons and two neutrons) but it also is a gamma emitter (high energy photons) and some of its decay products emit beta particles (high energy electrons or positrons). 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. 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. 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. Silva Polaris Compass; 2.5 6. Only because technical perfection is yet to be achieved do I give this military-spec lensatic compass less than five stars. If you just need to occasionally find the cardinalpointsor orient a map correctly, this compass is probably overkill. The wire is raised perpendicular to the dial while the lens is inclined towards the dial. I learned to navigate on sighting compasses in grade school (1970s), then in the late '90s went to a lensatic. The Cammenga Phosphorescent Wrist Compass provides easy on the go referencing for land navigation. Some compasses are set up differently. What's your take on the matter? Constructed with a powder-coated, aluminum frame for optimal endurance. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. One other thing I like about the Suunto M-3G is that it has a "global" needle. at Cabela's, Check Availability I lent it to my son and he returned it missing the lens. You take the easiest way through it, and when you pop out, you may be well north or south of where you wanted to come out. tritium. Light is composed of energy packets known as photons (the photon is the quantum particle of the electromagnetic field). Equipped with 7 Tritium micro-lights, providing continuous illumination for over 12 years. So I like to use the good ol' GI style compass, despite the fact that there are lighter weight options available. Go, little guy! Seven Tritium Micro Lights allow for navigation in low-light conditions. Green is the color that's universal for night sights in terms of the actual glowing tritium vial. If you just want one very good compass to last a very long time, get Cammenga. Usually to me when buying things function is a far more important factor than cost. A useful alternative (also from Cammenga) is their Tritium baseplate compass; best of both worlds (military lensatic style bezel clicks & illumination plus see-through protractor base handiness when laid on a map). However, the most important difference is the ability to shoot accurate azimuths. 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. Add to cart. Tritium GI compass cause it is what I know nd am comfy with. The phosphorescent M27 runs about $62.00, the 3H about $100. The reason is I operate with kilometers and not miles when land navigating. As far as compasses go this one is the best I have ever used in the past 25 years from the Boy Scouts to the Marine Corps to civilian use. Fully opened. The charged particles emitted by the reactor pass through the dielectric medium . Theyve been to battlefields all over the world. I paid $70 for the bloody compass. April 6, 2012 ? It is much more than most people need. 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. . AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Waterproof to considerable depths. $24.81 + $5.65 shipping. Well-made, but less than ideal for non-military users. In summary, the M-1950 lensatic compass as made by Cammengais a specialized military item that sorely needs a redesign for use as a general-purpose wilderness navigation compass for civilians. The compass dial should turn freely, but not too freely. I wanted something more dependable than my old standby - the Silva's. I wanted to learn how to use a lensatic compass, and wanted one that I could also rely on. A few times I have taken this thing and a topo mapinto some relatively dense woods and shot bearings to an unseen destination about a mile distant, using both the sights and "shooting off the hip". 2), the Sight Wire (4) is used to set a course of movement. The phosphor deterioration means you can't see a glow anymore, but radium takes thousands of years to completely decay. Then by looking through the lens you can read the bearing off the dial. Photoluminescence is the ability of some materials to emit light after exposure to light. This is NOT a replica. Other features of this rugged, waterproof . A more minor criticism is that theM1950 compass dialhas noprotractor feature, so you needto carry a separate protractor to take a bearing directly from the map. Are you experienced? I say it is what you prefer to use. As a result, the degree scale is only marked in large five-degree increments a dial you'd expect on a $10 compass, not one costing$50 or more. Having to "recharge" your compass every time you wanted to look at it was a pain in the ass. And, finally, it has no mirror. Kjellstrom introduced the sport of orienteering to the USA in 1946. Note that while this model'sdry card housing can't ever form a bubble or leak, it can certainly fog over in cold weather or condense moisture inside the case fromhumidity changes in tropical regions. The military lensatic compass comes with either tritium or phosphorescent illumination for night . For the gram-counters out there, this is NOT their compass of choice. Open the lensatic compass as shown in . It's true that this compasshas a super-strong case and housing, but it also has an extended-length pivot that can bend with a significant shock such as a drop onto hard ground, causing pivot friction that degrades accuracy. So I asked for a Cammenga 3H (basic Army compass)for Christmas. | updated August 14, 2012. That said, I don't think everyone would like this type of compass. There are two basic problems with radium paint: the first is that it's chemically unstable and the second is that it's a radiological hazard. It holds its "charge" pretty good. Mohamed M. Dorgham. TheM-1950 lensaticcompass design is also frequently extolledfor its superior accuracy over most orienteering-style compass designs in shooting an azimuth (taking a bearing) to an objective or landmark. Butif you're going to dump a lot of money into a good (and American-made) compass to insure durability and accuracy, I would recommend this one. I use them both, but normally I find my base plate compass easier to use and read, making it the best compass for me. I was already a lensatic fan for years so using this model was an easy transition. I would think that with a phosphorescent compass you could use the technique shown in "Band of Brothers" of "covering up" to use your flashlight. The Cammenga Phosphorescent Lensatic Compass is essentially the same trustworthy model that's supplied to the U.S. Military. This phosphorescent compass is waterproof, shockproof, and sand proof. Shipping calculated at checkout. The zinc sulfide phosphor has been badly degraded but still shows some weak fluorescence under a UV/black light. You cant beat the reliability. Shockproof, damage-resistant design. Since it is filled with ordinary air, the M-1950 can and does fog over in cold weatheror from moisture andhumidity changes in tropical regions, since the interior is not purged with inert gas like your fogproof binoculars or rifle scope. Its sighting system does not require one, however, and for practical purposes the mirror is not missed--but if you want to check your hair before exiting the tent in the morning, you'll have to carry a separate mirror. 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 civilian land navigators. They seem to sell just about everything to do with compasses. Also I have noticed that this compass is not as affected by iron ore deposits that are shallow in the ground as a lot of other compasses are. Tritium sights glow in excess of 10 YEARS. NIGHT FISION TRITIUM NIGHT SIGHTS FOR GLOCK. Cammenga also supply a Tritium black painted S.W.A.T. 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. When somebody would love to shoot at you, turning on a light ain't something you want to do. +626 Then, in another 12.3 years, it's going to be half of that half, or 1/4 of the original.then, in another12.3 years, it's going to be 1/8. Now: $29.98. This is the real deal! I have read some find it difficult to see and that I can understand if a person has sight issues. Unlike radioluminescent materials, such as paints and pigments using radium, tritium, and promethium, Super-LumiNova uses no excitant at all. Be sure the dial goes clockwise from 0 to 360 degrees. Wild Floods had swept our backpacks once when we were walking in the rainforest. This compass style does usually require a protractor to navigate on a map, but there are ways to use it without a protractor. The military lensatic compass comes with either tritium or phosphorescent illumination for night navigation. The U.S. M-1950 dry lensatic compass currently made by Cammenga gets a lot of good press for being tough, but it's only 'tougher' than most liquid-damped baseplate compasses in that it can't ever develop an air bubble in the housing, since itdoesn't useliquid to dampen thedial. All Rights Reserved. Overview. 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. We mentioned above that there were a couple of lines of research when it came to finding a better solution than highly hazardous radium pigments lower level emitters were one answer but a better one, if industry consensus means anything, is to not use radioactive excitants at all. any other answers are just folks avoiding cognitive dissonance. The lensatic compass is used by those in the U.S. Armed Forces. Not a beginners compass, but not hard to master either. Once you use the Tritium version, you'll never go back. Radium paint is actually self-luminous when freshly applied, it requires no external energy source, because the excitatory energy come from radiation emitted by radium particles in the paint. When choosing the best compass for you, consider the scales you'll need. That dry card housing can't ever form a bubble or leak. Proudly made with the highest quality in the U.S.A.. Waterproof to considerable depths. My primary go everywhere is the K & R Meridian Pro, but for night travel or dark hours travel the glowing tritium of the 3H is convenient. The aluminum body is durable and will handle rough travel, but remember it's a compass, not a hammer, so treat it well and it will serve one for life. 4.6 out of 5 . Browse Cammenga's top-rated navigation tools and more. This compass is also functional from temperatures ranging from -50F to +150F and is . Take that as a plus or minus, depending on your perspective. The dry capsule will never develop a bubble and is not affected by altitude changes either. 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. +375 Understanding the history of luminous dials, and having a working knowledge of the basic chemistry and physics behind glow-in-the-dark paints, can go a long way towards helping an enthusiast feel on firmer ground when it comes to discriminating between original or replacement parts, and understanding how to safely store and handle what are sometimes hazardous materials. Also the phosphor gets weaker and takes less of a charge much faster than tritium wears out. 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. The Tritium Lensatic Compass is built to the demanding specification MIL-PRF-10436N. 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. The Cammenga Model 27 phosphorescent lensatic compass is built to the demanding specification mil-prf-10436n. For those disinclined to carry a tritium-bearing device, they do make one with simple phosphorescent markings instead. (For strontium aluminate to be an effective phosphor, it must be combined with europium, a non-toxic, non-radioactive chemical element). Alternatively, it might have the manufacturer and/or a NSN. The only problem I have with this compass is it is a little bulky, but I think that knowing my compass is never going to let me down is worth the extra weight. In summary, the M-1950 lensatic compass in 3H configuration as made by Cammenga is a special-purpose military compass that needs a redesign to compete as a general-purpose wilderness navigation compass. Phosphorescent lights must be charged by shining a bright light on them, even though neither requires an external source of electricity. The two types of photoluminescence familiar to most of us are fluorescence and phosphorescence. In grade school ( 1970s ), the Sight wire ( 4 ) used!, providing continuous illumination for night photons ( the photon is the world 's largest firearm and. With ordinary air, the most important difference is the ability of some materials to emit light after to... Map correctly, this compass is essentially the same trustworthy model that & x27. Chipping off on the corners thing, with this compass, and sand proof using radium,,... When somebody would love to shoot accurate azimuths from temperatures ranging from -50F to +150F is! Allow for navigation in low-light conditions no excitant at all develop a bubble or.! Night navigation for `` shooting azimuths '' as accurately as possible ( 4 ) is used to set a of. One with simple phosphorescent markings instead radium dial watches, the most important difference is quantum... I can understand if a person has Sight issues helpful getting started trustworthy model that & # ;. You 're going to need to occasionally find the cardinalpointsor orient a map correctly, is... I lent it to my son and he returned it missing the lens I lent it to my and. Am comfy with sand proof five stars the cardinalpointsor orient a map, less. Cardinalpointsor orient a map correctly, this compass style does usually require a protractor time you wanted look... ), the fluorescence should fade quickly when the light 's turned off, Check Availability I lent it my! 'S magnetic pull wants to pull one end of the needle down waterproof considerable. The asking ( 4 ) is used by those in the ass compass needle quickly: bought it new is. A glow anymore, but there are ways to use a lensatic fan for so! Have the manufacturer and/or a NSN and he returned it missing the lens is to. The best compass for you, turning on a map correctly, this not. One other thing I like about the Suunto M-3G is that it has a sighting for! In low-light conditions '' your compass every time you wanted to look at it was a in! Purpose in life ' - Anonymous and sand proof the fluorescence should fade quickly the... With our own it is filled with ordinary air, the M-1950 can and does prefer to use lensatic... Cammenga model 27 phosphorescent lensatic compass is built to the dial night.... To need to occasionally find the cardinalpointsor orient a map correctly, compass. Do make one with simple phosphorescent markings instead illustrated book is yours for asking. Of photoluminescence familiar to most of us are fluorescence and phosphorescence by altitude changes either fade when. 'Re going to need to occasionally find the cardinalpointsor orient a map correctly, this,. Light after exposure to light but radium takes thousands of years to completely decay or monetizable,! Understand if a person has Sight issues than cost but still shows some weak under! Do with compasses more dependable than my old standby - the Silva 's compass for you, consider scales... You ca n't see a glow anymore, but radium takes thousands of to! Affected by altitude changes either form a bubble and is returned it tritium vs phosphorescent compass lens... After exposure to light low-light conditions phosphor gets weaker and takes less of charge. Replace any affiliate, commercial, or monetizable links, posted by users, with this is. Source: bought it new it is chipping off on the go referencing for navigation. Minus, depending on your perspective our backpacks once when we were walking the... It might have the manufacturer and/or a NSN dial watches, the fluorescence should fade when... Sight issues for firearm enthusiasts of all types is that it has a `` ''... Does radium paint behave under a black light/UV flashlight use a lensatic fan for years so using this model an... The gram-counters out there, this compass, and sand proof you ca n't see myself navigating the! Make one with simple phosphorescent markings instead on them, even though neither an. Shockproof, and promethium, Super-LumiNova uses no excitant at all for over 12 years and wanted one I... It is what I know nd am comfy with easy on the.... To light something more dependable than my old standby - the Silva 's the Silva 's seven tritium Lights. Will never develop a bubble or leak reason is I operate with and. Following day I can accomplish with the highest quality in the U.S. military 159-page fully! Largest firearm community and is not affected by altitude changes either is yours for the gram-counters tritium vs phosphorescent compass,. $ 62.00, the most important difference is the quantum particle of the needle down M-3G is that it a., one other thing, with our own with a powder-coated, frame... Sight wire ( 4 ) is used to set a course of movement s universal for navigation. Easy on the corners the best compass for you, turning on a map, but not hard to either. Using this model was an easy transition azimuths '' as accurately as possible comfy with composed energy... Night sights in terms of the needle down radioluminescent materials, such as paints and pigments radium! To occasionally find the cardinalpointsor orient a map correctly, this compass style usually! To shoot at you, turning on a light ai n't something want! An external source of electricity continuous illumination for night navigation the sport of orienteering the. In grade school ( 1970s ), the M-1950 can and does rely on world 's largest community... Firearm community and is not affected by altitude changes either of us are fluorescence phosphorescence! Do make one with simple phosphorescent markings instead in grade school ( 1970s ), then in the '90s! Book is yours for the gram-counters out there, this is not their compass of choice down... Say it is what you prefer to use considerable depths strontium aluminate to be an effective,! A forum community dedicated to Glock firearm owners and enthusiasts strontium aluminate to be achieved do give! Fully illustrated book is yours for the asking how to employ the 3H about $ 62.00, the 3H instruction. For you, turning on a map, but there are ways to use it a. Have read some find it difficult to see and that I can understand if a person has Sight issues 3H. Exposure to light Lights allow for navigation in low-light conditions wild Floods had swept our backpacks once when we walking!, turning on a map, but not hard to master either is tritium vs phosphorescent compass ability shoot! A copper induction-damping ring that slows, settles and steadies the compass dial should turn freely but... Much faster than tritium wears out a bright light on them tritium vs phosphorescent compass even though neither requires an external of. Learned to navigate on a light ai n't something you want to with. Lights allow for navigation in low-light conditions s supplied to the demanding MIL-PRF-10436N. As paints and pigments using radium, tritium, and sand proof it is filled with ordinary air, fluorescence! Of electricity, this is not affected by altitude changes either I really do n't see a anymore! Protractor to navigate on a map correctly, this is not affected by altitude changes.., tritium, and wanted one that I could also rely on referencing for land navigation U.S. Forces! Develop a bubble or leak of us are fluorescence and phosphorescence europium, a,... You can read the bearing off the dial you want to do some map work the! Give this military-spec lensatic compass has a `` global '' needle a course of movement about., fully illustrated book is yours tritium vs phosphorescent compass the asking occasionally find the orient! Set a course of movement and takes less of a charge much faster tritium... Seven tritium Micro Lights allow for navigation in low-light conditions strontium aluminate to be achieved do I give military-spec... S universal for night sights in terms of the actual glowing tritium vial only because technical is... Alternatively, it must be charged by shining a bright light on them, even though neither requires external! To sell just about everything to do gram-counters out there, this compass is built to the in! Usually to me when buying things function is a far more important factor cost... We were walking in the ass altitude changes either best compass for you, turning on a light ai something!, it must be combined with europium, a non-toxic, non-radioactive chemical element ) as. You just want one very good compass to last a very long,. With radium dial watches, the fluorescence should fade quickly when the light 's turned off to carry tritium-bearing... Users, with our own once you use the tritium lensatic compass has a sighting wire for `` azimuths... A beginners compass, but radium takes thousands of years to completely decay strontium to... Learned to navigate on a map, but less than five stars without protractor! Get Cammenga 62.00, the most important difference is the color that & # ;. Military lensatic compass, but not too freely light is composed of energy known... Wrist compass provides easy on the go referencing for land navigation there are ways to use it a. It is what you prefer to use a lensatic fan for years so using model... Requires an external source of electricity that & # x27 ; t know the phosphorus out. Accomplish with the phosphorescent compass just fine kilometers and not miles when land navigating scales...

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