1、AMSC N/A FSC 6605 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Comments, suggestions, or questions on this document should be addressed to: U.S. ARMY TOPOGRAPHIC ENGINEERING CENTER, ATTN: CEERD-TS-T, 7701 TELEGRAPH ROAD, ALEXANDRIA, VA 22315-3864 or emailed to pd
2、-tetec.army.mil . Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at www.dodssp.daps.mil . MIL-PRF-10436N 31 OCTOBER 2003 SUPERSEDING MIL-PRF -10436M 15 SEPTEMBER 1998 PERFORMANCE SPECIFICATION COMPASS, MAGNETIC,
3、UNMOUNTED: LENSATIC, LUMINOUS, 5 DEGREE AND 20 MIL GRADUATIONS, WITH CARRYING CASE All Departments and Agencies of the Department of Defense approve this specification for use. The original issue of this specification replaced MIL-C-10436. 1. SCOPE 1.1 Scope. This specification covers an induction-d
4、amped, lensatic, unmounted, magnetic compass, with 5 degree and 20 mil graduations, for individual use during day and nighttime. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents
5、cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this sp
6、ecification, whether or not they are listed. 2.2 Government documents. 2.2.1 Other Government documents and publications. The following other Government documents and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in t
7、he solicitation. METRICProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-10436N 2 OTHER GOVERNMENT DOCUMENTS DEPARTMENT OF INTERIOR, U.S. GEOLOGICAL SURVEY ISOGONIC CHARTS Epoch 1995 Map No. GP1002-D Magnetic Declination of the U.S. Epoch 1995
8、Map No. GP1002-F Magnetic Total Intensity of the U.S. Epoch 1995 Map No. GP986-V Magnetic Vertical Intensity of the U.S. Epoch 1995 Map No. GP986-H Magnetic Horizontal Intensity of the U.S. (Application for copies should be addressed to Map Distribution, U.S. Geological Survey, Box 25286, Federal Ce
9、nter, Denver, CO 80225.) 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, will supersede applicable laws and regulations unless a specific exemption ha
10、s been obtained. 3. REQUIREMENTS 3.1 Description. The compass (see Figure 1A and 1B) shall be an induction-damped, hand-held, north-seeking instrument with internal, self-exciting light source. 3.2 First article. Unless otherwise specified (see 6.2), a sample shall be subjected to first article insp
11、ection. 3.3 Design, materials, and manufacturing processes. Unless otherwise specified, the design, materials, and manufacturing processes are the prerogative of the contractor as long as all articles submitted to the government meet the operating, environmental, and support requirements specified.
12、3.3.1 Material deterioration prevention and control. The compass shall be fabricated from compatible materials, inherently corrosion resistant or treated to provide protection against the various forms of corrosion and deterioration to which they are susceptible. 3.4 Operating requirements. 3.4.1 Gr
13、aduations. The compass shall be graduated in degrees and mils. The degree graduations shall be semi-gloss red (see 6.11) and identified at 5 degree intervals. They shall be numbered every 20 degrees, with north being 0 degrees. The north arrow may be used in lieu of the “0“ degree marking. The mil g
14、raduations shall be semi-gloss black (see 6.11) and identified at 20 mil intervals. They shall be numbered every 200 mils, using only hundreds and thousands digits (i.e., 2, 4, 6, 64 represent 200, 400, 600, 6400 mils). North shall be identified as 6400 mils. All graduations shall be distinguishable
15、 in day and night conditions (see 4.4.1.1). 3.4.2 Scale. The compass shall have a scale of 1:50000 with graduations of 100 meters, 0 to 6000 minimum, along the length of the compass, in the opened configuration (if applicable) (see 4.4.1.2) Provided by IHSNot for ResaleNo reproduction or networking
16、permitted without license from IHS-,-,-MIL-PRF-10436N 3 3.4.3 Sighting device. The compass shall have a sighting mechanism, capable of aiming the compass in day and night conditions (see 4.4.1.3). 3.4.4 Bezel. The compass shall have an attached bezel (ring with luminous line), capable of rotation th
17、rough 360 degrees in either direction. Rotation shall be limited to 3 degree increments with tactile (non-audible) feedback. There shall also be means to prevent accidental movement or removal of the bezel (see 4.4.1.4). 3.4.5 Free floating assembly. When a free floating assembly is employed, the co
18、mpass shall incorporate a mechanism that restricts all movement of the dial assembly when the compass is not in use, and automatically releases the dial assembly for use (see 4.4.1.5). 3.4.6 Lanyard. A neck lanyard 2.5 0.5 millimeters (mm) thick with the ends permanently joined to form a loop, 150 5
19、 centimeters (cm) in circumference, shall be attached to each compass. The lanyard shall be lusterless green (see 6.11) and made from a suitable, pliable, durable material (see 4.4.1.6). 3.4.6.1 Lanyard attachment. The lanyard and compass attachment point shall withstand a force of 34 kg without dam
20、age, breakage or separation from the compass (see 4.4.1.6.1). 3.4.7 Carrying case. A carrying case shall be furnished with each compass. The case shall be a pouch made from a suitable, pliable, durable material, with a single heavy duty fastening system on the fold over flap closure. The carrying ca
21、se material shall be lusterless green (see 6.11) and the fasteners shall be lusterless black (see 6.11). It shall be provided with a means for drainage and for attachment to belts 7 cm wide. The case shall be constructed for repeated use and to facilitate storage and retrieval of the compass and ins
22、truction card (see 4.4.1.7 and 4.4.3.4). 3.4.7.1 Instruction card. Instructions in semi-gloss white (see 6.11) lettering shall be printed on a semi-gloss green (see 6.11) card, 6 x 10 cm nominal size that shall not be damaged by water or moisture. One card, without being folded, shall be inserted in
23、to each compass carrying case (see 4.4.1.7.1). Additional instruction cards shall be provided as specified (see 6.2). Data, printed legibly on cards, shall be as follows: INSTRUCTIONS: (1) Align luminous line on compass ring with sight lines. (2) Turn ring counterclockwise by desired number of click
24、s. Note: Number of clicks = degrees azimuth divided by 3. Example: 51 degrees azimuth / 3 = 17 clicks counterclockwise. (3) Turn compass until north arrow lines up with luminous line on ring. (4) Sight line now points to azimuth. 3.4.8 Magnetic performance. The compass shall provide magnetic perform
25、ance as specified in 3.4.8.1, when operated in accordance with the instructions in 3.4.7.1. It shall be capable of being read to an accuracy that ensures an error not greater than 40 mils, in any ambient light, under adverse field conditions (see 4.4.1.8). Provided by IHSNot for ResaleNo reproductio
26、n or networking permitted without license from IHS-,-,-MIL-PRF-10436N 4 3.4.8.1 Magnetic standard. The compass shall operate in a magnetic field with a horizontal component equal to the local standard .01 oersted and vertical component of the local standard .03 oersted (Continental United States). T
27、he local standard shall be established using the U.S. Geological Survey (Department of the Interior) Epoch 1995 Map No. GP1002-D, Magnetic Declination of the U.S.; Epoch 1995 Map No. G1002-F, Magnetic Total Intensity of the U.S.; Epoch 1995 Map No. GP986-V, Magnetic Vertical Intensity of the U.S.; a
28、nd Epoch 1995 Map No. GP986-H, Magnetic Horizontal Intensity of the U.S. 3.4.9 Mechanical performance. The compass shall meet the subordinate requirements with the compass in the operational configuration and away from all magnetic effects external to the compass caused by buildings, vehicles, elect
29、rical devices, etc. 3.4.9.1 Damping. The magnetic assembly, shall come to rest within 6 seconds of time after being deflected 540 20 mils from a position of equilibrium (see 4.4.1.9.1). 3.4.9.2 Freedom of rotation when tilted. The operation of the compass shall not be adversely affected when it is t
30、ilted 8.0 0.1 degree from the horizontal and rotated 360 degrees in a plane normal to the longitudinal axis of the pivot (see 4.4.1.9.2). 3.4.9.3 Compass error. The error in magnetic azimuth, including that caused by pivot friction, shall not be greater than 40 mils (see 4.4.1.8). 3.4.9.4 Friction e
31、rror. The error caused by friction between the pivot supporting the dial and its bearing shall not be greater than 20 mils (see 4.4.1.9.3). 3.4.10 Illumination. The compass shall have internal, self-exciting light sources of constant luminosity for sighting and reading. In addition, the dial assembl
32、y shall have a light source on the permanent magnet to indicate north and the bezel crystal shall have a light source to aid in setting readings and sighting. The “E“ (east) and “W“ (west) markings shall also be illuminated. All sources shall be mounted flush with or recessed in their mounting surfa
33、ces and encapsulated to inhibit damage (see 4.4.1.9.4). 3.4.10.1 Luminosity. Luminous material, in the final form, shall have a peak spectral output of 530 30 nanometers. The brightness of the luminous sources installed in the completed compass shall be sufficient to allow the performance of compass
34、 functions in any ambient light and under any of the environmental conditions specified herein (see 4.4.1.9.4.1). Self-exciting luminous sources shall have a minimum service life of 12 years (see 6.2). 3.5 Environmental requirements. 3.5.1 Water leakage. The complete compass shall be capable of bein
35、g submerged into water without leakage into the interior of the compass, where it will adversely affect performance directly or indirectly (see 4.4.2.1). 3.5.2 Shock. The compass shall not be damaged or suffer performance degradation when dropped from a height of 90 cm (see 4.4.2.2). 3.5.3 Low and h
36、igh temperatures. When exposed to temperature extremes of -44C and 68C, the compass shall function properly and shall not be damaged (see 4.4.2.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-10436N 5 3.5.4 Thermal shock (vials only). Sel
37、f-excited luminous sources shall not be damaged by thermal shock caused by sudden temperature changes of -52C to 68C (see 4.4.2.4). 3.6 Support requirements. 3.6.1 Dimensions and weight. The compass shall not be greater than 9 cm long, 8 cm wide and 4 cm high, in its closed or stored configuration.
38、Its weight shall not be greater than 170 grams (see 4.4.3.1) 3.6.2 Radiological containment. If radioactive luminous light sources are used (see 3.4.10), these subordinate requirements are mandatory. 3.6.2.1 Contamination. Removable contamination activity of the completed compass shall be less than
39、900 disintegration rate per minute (dpm) at the time of production (see 4.4.3.2.1). 3.6.2.2 Diffusion. A completed compass with all the luminous vials installed shall not leak radioactive material in excess of 0.05 microcuries in 24 hours (see 4.4.3.2.2). 3.6.3 Impact durability of vials. If radioac
40、tive self-luminous source vials are used, the vials shall show no evidence of leakage, breaking, checking, shattering or spalling when the compass is dropped onto a hard surface (see 4.4.3.3). 3.6.4 Durability. The case, compass body, crystal, and moving parts shall meet all of the requirements that
41、 are described, herein, for a minimum service life of 12 years (see 4.4.3.4). 3.6.5 Finishes. 3.6.5.1 Wear surfaces. Any exterior surfaces subject to wear from repeated use shall be finished in a manner that produces a wear resistant semi-gloss black finish (see 4.4.3.5.1)(see 6.2)(see 6.11). 3.6.5.
42、2 Non-wear surfaces. All other external surfaces shall be treated and painted for corrosion protection, as necessary. The finish coat shall be semi-gloss green enamel (see 4.4.3.5.2)(see 6.11). 3.6.5.3 Damping shell. The inside (visible) surfaces of the damping shell shall be treated and painted for
43、 corrosion protection. The finish coat shall be semi-gloss white enamel (see 6.11)(see 4.4.3.5.3). 3.6.6 Markings. 3.6.6.1 Identification. Lot identification shall be permanently marked on the compass, inside the cover (if applicable) to include year and month of manufacture and lot number. The top
44、of the compass shall be marked with the identification and part number of the manufacturer, and National Stock Number (NSN) (see 4.4.3.6.1). 3.6.6.2 Radiation marking. If radioactive materials are used in the production of the compass, one of these subordinate requirements is mandatory (see 6.2). 3.
45、6.6.2.1 Specific license marking. The bottom of the compass shall be permanently marked as required by applicable Nuclear Regulatory Commission Byproduct Materials License. It shall include the radiation caution symbol (not in color), quantity of isotope, the byproduct-materials Provided by IHSNot f
46、or ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-10436N 6 license number, and appropriate control instructions of the using service. A warning against disassembly shall also be included (see 4.4.3.6.2.1). 3.6.6.2.2 Marking of a license exempt item. The bottom of
47、the compass shall be permanently marked to include the Nuclear Regulatory Commission manufacturers identification number, XXXmCi 3H and CONTROLLED DISPOSAL REQUIRED (see 4.4.3.6.2.2 and 6.4). 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classifi
48、ed as follows: a. First article inspection (see 4.2). b. Conformance inspection (see 4.3). c. Comparison inspection (see 6.8). 4.2 First article inspection. First article compasses shall consist of 10 completely assembled units. 4.2.1 Tests. Unless otherwise specified (see 6.2), the first article co
49、mpasses shall be tested as specified in table I in the sequence presented. Failure of any test shall be cause for rejection of the first article compasses. TABLE I. Test schedule. Test Verification Requirement Luminosity 4.4.1.9.4.1 3.4.10.1 Contamination 4.4.3.2.1 3.6.2.1 Shock 4.4.2.2 3.5.2 Low and High temperature 4.4.2.3 3.5.3 Damping 4.4.1.9.1 3.4.9.1 Freedom of rotation when tilted 4.4.1.9.2 3.4.9.2 Magnetic performance and compass error 4.4.1.8 3.4.8, 3.4.9.3 Fri
