DLA A-A-59308-1998 CLINOMETERS SHIP AND ACCESSORIES《船用测角器及辅助设备》.pdf
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1、 A-A-59308 9018054 0003182 366 = IINCH-POUND I 24 AuPust 1998 SUPERSEDING 18 January 1991 A-A-59308 MIL-C-20061D COMMERCIAL ITEM DESCRIPTION CLINOMETERS, SHIP, AND ACCESSORIES The General Services Administration has authorized the use of this commercial item description for all federal agencies. 1.
2、SCOPE. This commercial item description (CID) covers two types and three classes of bubble-in-tube type ship clinometers used for measuring the trim and the heel of ships. 2. CLASSIFICATION 2.1 Types. The clinometers shall be of the following types as specified (see 7.3): Type I - Trim clinometer Ty
3、pe II - Heel clinometer 2.2 Classes. The clinometers shall be of the following classes as specified (see 7.3): Class A - 15 degrees of arc each side of the vertical Class B - 20 degrees of arc each side of the vertical Class C - 60 degrees of arc each side of the vertical Beneficial comments, recomm
4、endations, additions, deletions, clarifications, etc, and any data which may improve this document should be sent by letter to: Defense Supply Center Richmond (DSCR), ATTN: DSCR-VBD, 8000 Jefferson Davis Highway, Richmond, VA 23297-5610. AMSC NIA FSC 6605 DISTRIBUTION STATEMENT A. Approved for publi
5、c release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-593 08 3. SALIENT CHARACTERISTICS 3.1 Toxic chemicals. hazardous substances, and ozone depletinp. substances CODSI. The use of toxic chemicals, hazardous substa
6、nces, or ODS shall be avoided, whenever feasible. 3.2 MountinP board. The mounting board shall be fabricated fiom plastic or stainless steel. 3.2.1 Type I. The mounting board shall be 14 inches wide and 5 inches high. Along the top edge, there shall be two mounting holes O. 196 inches in diameter. T
7、he holes shall be spaced five-eighths of an inch from the top and each side edge. Along the bottom edge, there shall be one mounting hole 0.196 inches in diameter. The hole shall be located five-eighths of an inch from the bottom and 5 7/8 inches from the left edge. 3.2.2 TyDe II. The mounting board
8、 shall be 17 inches wide and 10 inches high. Along the top edge, there shall be two mounting holes 0.196 inches in diameter. The holes shall be spaced five-eighths of an inch from the top and each side edge. Along the bottom edge, there shall be one mounting hole 0.196 inches in diameter. The hole s
9、hall be located five-eighths of an inch from the bottom and 7 7/16 inches from the left edge. 3.3 Graduations. Centered above each clinometer tube shall be a degree-graduated scale. The zero-degree mark shall be in the center, and the remainder of the degree marks shall be equally spaced to the left
10、 and right of the zero in one-degree increments. Each five-degree mark shall be numbered. The scale shall be permanently marked or affixed on the clinometer. The numerals and the graduations shall be in a contrasting color from the color of the material on which they are placed. 3.4 Accuracy. Any an
11、gular movement of the tube in a vertical plane shall produce a corresponding movement of the bubble within 1 degree for the type I, class A and type II, class B tube; and within 2 degrees for the type II, class C tube. This shall be verified by mounting the clinometer on a dividing head or other cal
12、ibrated stand so that it can be revolved in the vertical plane. The indications shall be observed when the clinometer is displaced fiom the vertical. Five points on each side of the vertical shall be tested. The test shall be performed at a temperature between 153C and 23.9“C. 3.5 Shock. The assembl
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