Cammenga is an outdoors products company, known chiefly for producing

navigation Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.Bowditch, 2003:799. The field of navigation includes four general categories: land navigation, ...

equipment under contract for

United States Armed Forces The United States Armed Forces are the military forces of the United States. The armed forces consists of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The president of the United States is ...

. They are the official supplier of the M-1950 lensatic field compass issued to U.S. Army and Marine Corps infantry and artillery units.

Profile

Cammenga was founded in 1992 by a group of investors to produce the M-1950 3H lensatic compass to the U.S. Armed Forces. Since 1992, Cammenga has held the U.S. military contract for the M-1950. The firm develops, manufactures, and distributes a wide variety of products to military, law enforcement, and commercial markets around the world, including land navigation instruments, firearm sighting and loading systems, firearm magazines,

tritium Tritium ( or , ) or hydrogen-3 (symbol T or H) is a rare and radioactive isotope of hydrogen with half-life about 12 years. The nucleus of tritium (t, sometimes called a ''triton'') contains one proton and two neutrons, whereas the nucleus of ...

knives, and other tritium light source integration services. The company provides development assistance in tritium (self-luminous) lighting products, NRC approval processing, tritium capsule assembly and installation procedures, and product testing. The company is ISO 9001:2000 certified.

Manufacturing facility

Cammenga's primary production plant includes a clean room environment for the assembly and testing of tritium products and critical devices. The company provides Cammenga assists with tritium product design, NRC approval processing, tritium installation, and product testing.

U.S. M-1950 3H Lensatic Compass

The M-1950 U.S. military lensatic field compass with self-luminous lighting (designated the Model 3H by Cammenga) is fitted with self-luminous tritium vial lighting. Under U.S. military specification (MIL-SPEC) performance criteria, ten pre-production samples of the M-1950 are required to meet a battery of performance, durability, and accuracy standards.
Article MIL-PRF-10436N
', rev. 31 October 2003, Washington, D.C.: U.S. Dept. of Defense This includes an overall inherent accuracy standard of ±40 mils (2.25 degrees) from actual magnetic

azimuth An azimuth (; from ar, اَلسُّمُوت, as-sumūt, the directions) is an angular measurement in a spherical coordinate system. More specifically, it is the horizontal angle from a cardinal direction, most commonly north. Mathematical ...

; a tritium illumination test; and a shock or impact test, in which samples of the M-1950 are tested dropping the compass from a height of 90 cm (35 in.) on a solid surface covered with 10 cm (4 in.) of plastic-covered sand, followed by testing to ensure performance within specified accuracy standards. A water leakage test is also performed.MIL-PRF-10436N, ''Performance Specification'', 4.4.2.1: Water leakage. The complete compass shall be submerged in 300 ml of distilled or deionized water for 24 hours at 23° ±5°C. The compass shall be removed from the water and examined for water leakage. If there is evidence of water in the compass bowl at the completion of the test, it shall constitute failure of this test.

References

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External links

Cammenga homepage
* Visit also th
Online Compass Museum
Companies based in Michigan Navigational equipment manufacturers

Profile

Manufacturing facility

U.S. M-1950 3H Lensatic Compass

See also

References

External links