MIL-PRF-17850B
(Application for copies should be addressed to the American Society for Quality (ASQ),
641 East Wisconsin Ave., Milwaukee, WI 53201-3005.)
2.3 Order of precedence. In the event of a conflict between the text of this document and
the references cited herein, the text of this document takes precedence. Nothing in this document,
however, supersedes applicable laws and regulations unless a specific exemption has been
obtained.
3. REQUIREMENTS
3.1 First Article. When specified (see 6.2), a sample shall be subjected to first article
inspection in accordance with 4.2.
3.2 Material. The material used in the compass shall be resistant to corrosion and to a
build up of a static charge. The clear portion of the case shall be transparent, scratch resistant,
and free from flaws which will affect the reading of the compass under normal operating
conditions. The materials selected shall be capable of meeting all of the operational and
environmental requirements for the intended use specified herein. This environment shall include
exposure to a salt fog or spray environment.
3.3 Design. The design, materials, construction, and accessories shall represent the
current start-of-the-art practices for functionality and durability. To include card or dial damping.
3.3.1 Graduations and markings. The compass shall be graduated in increments of 2.5
degrees or less with major markings or numbers at the 30 degree points and the letters N, E, S,
and W at the cardinal points.
3.3.2 Dimensions and weight. The compass shall not exceed 1.5 inches in thickness and 3
inches in diameter or 3 inches square and the weight shall not exceed 3 ounces.
3.3.3 Lanyard. The compass shall be furnished with a lanyard.
3.3.4 Lubber line. The compass shall be marked with a lubber line.
3.3.5 Sighting slot. The compass shall be furnished with V-shaped sighting slots at the
top of the case, that are aligned with the lubber line.
3.3.6 Color. The compass card background shall be lusterless black. The degree
graduations, letters, numerals and arrow shall be lusterless white. If compass is of aluminum
composite, then it shall be photo etched to expose lusterless aluminum markings.
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