DLA MIL-S-20197 C-1977 SCALE PLOTTING PRECISION CENTIMETERS AND INCHES WITH CASE《带盒的公分和英寸的精密标图尺》.pdf

1、I MIL-S-20377C 66 9 777770b 0130363 3 MIL-S-20197C 16 March 1977 SUPERSEDING MIL-S-20197B 29 April 1971 MILITARY SPECIFICATION SCALE, PLOTTING, PRECISION, CENTIMETERS AND INCHES, WITH CASE This Specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1

2、.1 Scope. This specification covers a metal, precision calibrating and measuring scale graduated in centimeters and inches, and a carrying case 2. APPLICABLE WCUMENTS 2.1 Issues of documents. The following documents of the issue in effect on date of invitation for bids or request for proposal form a

3、 part of this specification to the extent specified herein: SPECIFICAT IONS FEDERAL QQ-S- 7 81 PPP-B-601 PPP-B-6 36 - Strapping, Steel, and Seals. - Boxes, Wood, Cleated-Plywood. - Boxes, Shipping, Fiberboard. FSC 6675 Beneficial comments (recommendations, additions, deletions) and any pertinent dat

4、a which may be of use in improving this document should be addressed to: US Army Mobility Equipment Research and Development Command, ATTN: DRDME-DS, Fort Belvoir, VA 22060 by using the self- addressed Standardization Document Improvement Proposal (DD Form 1426 appearing at the end of this document

5、or by letter. / A I- L Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- flIL-S-20L77C 66 = 7777706 OL30Lb4 5 MIL-s-20197c MILITARY MIL-P -1 16 STANDARDS MILITARY MIL-STD-105 MIL-STD-129 MIL-STD-130 - Preservation-Packaging, Methods of. - Sampling Pro

6、cedures and Tables for Inspection by Attributes. - Marking for Shipment and Storage. - Identification Marking of US Military Property. (Copies of specif ications and standards required by contractors in connection with specific procurement functions should be obtained from the procuring activity or

7、as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. cated, the issue in effect on date of invitation for bids or request for proposal shall apply. Unless otherwise indi- NATIONAL MOTOR FREIGHT TRAF

8、FIC ASSOCIATION, INC., AGENT National Motor Freight Classification. (Applikation for copies. should b addressed. to the American Trucking Associations, Inc., ATTN: Traffic Department, 1616 P Street, NW, Washington, DC 20036.) UNIFORM CLASSIFICATION COMMITTEE, AGENT Uniform Freight Classification Rul

9、es. (Application for copies should be addressed to the Uniform Classi- fication Committee, ATTN: 222 South Riverside Plaza, Chicago, IL 60606,) Tariff Publishing Officer, Room 1106, (Technical society and technical association specifications and standards are generally available for reference from l

10、ibraries. are also distributed among technical groups and using Federal agencies.) They 3. REQUIRENENTS 3.1 Description. The scale shall consist of a metal bar with graduations as shown in Figures i and 2, furnished with a case as specified herein. 2 Provided by IHSNot for ResaleNo reproduction or n

11、etworking permitted without license from IHS-,-,-MIL-S-20197C bb m 9999906 OL30Lb5 7 m MIL-S-20197C 3.2 First article (first-produced scale). The contractor shall furnish one or more scales as specified (see 6.2) for examination and . testing within the time frame specified (see 6.2) to prove that h

12、is production methods will produce scales that comply with the require- ments of this specification. Examination and tests shall be as specified in Section 4 and shall be subject to surveillance and approval by the Government (see 6.3) . 3.3 Material. Material shall be as specified herein. Materials

13、 not specified shall be selected by the contractor and shall be subject to all provisions of this specification (see 6.4). 3.3.1 Metal. The scale shall be iron-nickel, low-expansion alloy of 36 percent, plus or minus 1 percent, nickel. Coefficient of expansion shall be 0.000001 to 0.000002 inch per

14、inch per degree C, stress relief at 205 C, plus or minus 5 C, for not less than 48 hours.- 3.4 Surfaces and edges. Scale edges shall be square and straight to within 0.005 inch and parallel to within 0.015 inch and shall not vary in thickness by more than 0.003 inch. 3.5 Graduations and numerals. Th

15、e scale shall be graduated as specified herein and as shown in Figures 1 and 2. graduated in centimeters and the other side shall be graduated in inches. overall length of the scale and shall be machine-divided. All graduation marks shall be V-shaped, uniform, clear, and distinct, and shall be 0.005

16、 inch, plus or minus 0.002 inch, deep and 0.007 inch, plus or minus 0.002 inch, wide at the top. The error in length between any two graduations shall be not more than 0.002 inch at 72 F (22 -2 C) . A center punch mark with a depth of not less than 0.005 inch and a 0.015- to 0.018-inch diameter at t

17、he top shall be located at the intersection of each vertical line and each vernier slant line with the central horizontal line and at the intersection of each horizontal line with the central vernier slant line. The numbers for the vertical graduations shall be 0.094 inch high. lines on the inch and

18、 centimeter scale shall be 0.062 inch high. One side shall be All graduations shall be centered approximately in the The numbers for the horizontal 35.1 Centimeter scale. The graduations of the centimeter scale shall permit precise measurements to 0.1 of a millimeter (mm), shall extend to the right

19、of the zero mark at 1-centimeter (cm) intervals for a distance of 100 cm, and shall extend to the left of the zero mark for a distance of 1 cm. The centimeter scale shall be in the form of a grid consisting of 11 parallel horizontal lines extending the entire 3 Provided by IHSNot for ResaleNo reprod

20、uction or networking permitted without license from IHS-,-,-MIL-S-20177C 66 W 7777706 0130166 7 W MIL-S-20197C length of the graduated portion of the scale, spaced 0.125 inch apart, and connected at the ends and at intermediate intervals of 1 cm by lines perpendicular thereto. The centimeter to the

21、left of the zero mark shall be subdivided by 10 slanting, parallel, uniformly spaced lines terminating at the outer horizontal lines of the grid and having such a slope that the upper end of each line shall be to the left of the zero mark at a distance of 1 mm greater than the lower end of the same

22、line. The first sloping line immediately to the left of the zero mark shall coincide with the zero mark at the lower end of the line (at the intersection with the lawer horizontal line of the grid) and shall be 1 mm to the left of the zero mark at the upper end (at the intersection with the upper ho

23、rizontal line of the grid). The next adjacent sloping line shall be 1 mm to the left of the zero mark at the lower end and 2 mm to the left of the zero mark at the upper end. The centimeter graduations for the entire length of the scale and the 5-nmi graduations to the left of the zero mark shall be

24、 numbered at both the top and the bottom of the grid. The graduations to the right of the zero mark shall read from left to right and the graduations to the left of the zero mark shall read from right to left. mediate horizontal lin- on the grid shall be numbered at both ends of the graduations from

25、 bottom to top from 1 to 9, inclusive. The inter- 3.5.2 Inch scale. The graduations of the inch scale shall permit precise measurements to 0.01 of an inch, shall extend to the right of the zero mark at 1-inch intervals :or adistance of 39 inches, and shall extend to the left of the zero mark for a d

26、lstance of 1 inch. The graduation of the inch scale shall be identical to the graduation of the centimeter scale as specified in 3.5.1 except that the divisions shall be in inches and in tenths and hundredths of an inch. 3.6 Identification marking. Each scale shall be identified in accordance with M

27、IL-STD-130. 3.7 Case. Each scale shall be contained in a felt-lined wooden case with a hinged lid. a manner that the centimeter and inch scales can be used without removing or turning the scale. The base and lid of the case shall be made in such 3.8 Workmanship. The scale shall be clean and free fro

28、m burrs and sharp edges. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1- 5 MIL-S-20197C 4. QUALITY ASSURANCE- PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the perform

29、ance of all inspection requirements as specified herein. specified in the contract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. reserves the right to perform any of the insp

30、ections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as otherwise The Government 4.1.1 Material inspection. The contractor is responsible for insuring that materials used are manufactured, examin

31、ed, and tested in accordance with referenced specifications and standards, as applicable. 4.2 Classification of inspections. The inspection requirements specified herein are classified as follows: (a) (b) (c) Inspection of packaging (see 4.6). First-produced scale inspectlon (see 4.3). Quality confo

32、rmance inspection (see 4.4). 4.3 First-produced scale inspection. 4.3.1 Examination. The first-produced scale shall be examined as specified in 4.5.1. for rejection. Presence of one or more defects shall be cause 4.3.2 Test. The first-produced scale shall be tested as specified in 4.5.2. Failure of

33、the test shall be cause for rejection. 4.4 Quality conformance inspection. 4.4.1 Sampling. Sampling for examination and test shall be conducted e in accordance with MIL-STD-105. 4.4.2 Examination. 4.4.2.1 Samples. Samples selected in accordance with 4.4.1 shall be examined as specified in 4.5.1. for

34、 major defects and 4.0 percent defective for theminor defect. AQL shall be 2.5 percent defective Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-20197C 4.4.3 Test. 4.4.3.1 Samples. Samples selected in accordance with 4.4.1 shall be tested as sp

35、ecified in 4.5.2. AQL shall be 2.5 percent defective. 4.5 Inspection procedure. 4.5.1 Examination. “he scale shall be examined as specified herein for the following defects: Major 101. Material not as specified. 102. Edges not square, straight, or parallel, and dimensions 103. 104. Case not as speci

36、fied. 105. Workmanship not as specified. not within specified limits, Scales not graduated as specified. Minor 201. Identification marktng missing, incomplete, or illegible. 4.5.2 Accuracy test. A beam co:apass which has been certified as accurate by the National Bureau of Standards shall be used to

37、 check the distances between any two graduations, than 0.002 inch between any two graduations on the rule at 72 F (22.2 C) shall constitute failure of this test. An error in length greater 4.6 Inspection of packaging. 4.6.1 Quality conformance inspection of pack. 4.6.1.1 Unit of product. For the pur

38、pose of inspection, a completed pack prepared for shipment shall be considered a unit of product. 4.6.1.2 Sampling. Sampling for examination shall be in accordance wl th MIL-STD-105. 4.6.1.3 Examination. Samples selected in accordance with 4.6.1.2 AQL shall be 2.5 shall be examined for the followlng

39、 major defects. percent defective. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-20377C 66 W 7477906 0330367 4 W MIL-S-2019 7C 106, Materials, method, or containers not as specified. Each incorrect material, method, or container shall be co

40、nsidered one defect. 107. Scale not contained in the carrying case as specified. 108. Box closure not Method V as specified. 109. Strapping not as specified. 110. Marking illegible, incorrect, incomplete, or missing. 5. PACKAGING 5.1 Preservation. Preservation shall be Level A or Commercial, as spec

41、ified (see 6.2) . 5.1.1 Level A. Each scale, in the carrying case, shall be preserved in accordance with MIL-P-116, Method III in a close-fitting box conforming to PPP-E-636, WC, style optional. accordance with the appendix to the box specification, Method V. 5.1.2 Commercial. Each scale, in the car

42、rying case, shall be Box closure shall be in preserved to afford protection against deterioration and damage during shipment and handling from the contractor to the initial destination. 5.2 Packing. Packing shall be Level A, Level B, or Commercial, as specified (see 6.2) . 5.2.1 Level A. The scales,

43、 preserved as specified in 5.1, shall be packed in close-fitting boxes conforming to PPP-B-601, Overseas Type, style optional. Strapping shall conform to QQ-S-781, Class 1, Type I or IV, size as applicable. Unless otherwise specified (see 6.2), strapping shall be Finish B, When specified (see 6.2),

44、strapping shall be Finish A. 5.2.2 Level B. Packing shall be as specified for Level A, except that boxes shall be Domestic Type and strapping shall be Finish A. 5.2.3 Commercial. The scales, preserved as specified in 5.1, shall be packed to assure carrier acceptance and safe delivery to destination

45、at the lowest ratings of the carrier in compliance with Uniform Freight Classification rules or National Motor Preight.Classification rules. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5.3 Marking. 5.3.1 Military packaging. Marking shall be in

46、accordancr with MIL-STD-129. 5.3.2 Commercial packaging. Commercial packaging marking shall rel-lect as a rajdmurn, the ttem name, national -stock number, quantity, contract or purchase order number, and appropriate address markings. The marking shall be applied with a waterproof material, shall be

47、legible, and shall provide a definite contrast. 6. NOTES 6.1 Intended use. The scales are intended for use as standard or master scales for calibrating other equipment, or for making or trans- ferring accurate measurement by a beam compass, or similar device, in map projection work. 6.2 Ordering dat

48、a. Procurement documents should specify the following : (a) Title, number, and date of this specification. (b) Time frame required for submission of first- produced scale, and number of scales required (see 3.2). Degree of preservation and degree of packing required (see 5.1 and 5.2). When other tha

49、n Finish B strapping is required (see 5.2.1). (c) (d) 6.3 First-produced scale. Any changes or deviations of production scales from the approved first-produced scale during production will be subject to the approval of the contracting officer. the first-produced scale will not relieve the contractor of his obligation to furnish scales conforming to this specification. Approval of 6.4 It is encouraged that recycled material bg used when p