DLA A-A-50209 A-1986 STRAIGHTEDGES STEEL DRAFTSMEN-S《绘图员用钢直尺》.pdf
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1、3- Zl-SS A-A-50209A September 15, 1986 SUPERSEDING A-A-50209 June 6, 1983 COMMERCIAL ITEM DESCRIPTION STRAIGHTEDGES, STEEL, DRAFTSMENS The General Services Adminstration has authorized the use of this commercial item description in preference to Federal Specification GG-S-776. This description cover
2、s straightedges used in general drafting practices for scaling and drawing straight lines. Salient characteristics: Design: The straightedges shall be straight, parallel, and of uniform thickness. All surfaces shall be true planes, The ends shall be at right angles to the ruling edges. approximately
3、 1-1/4 inch from one end of the straightedge. straightedge shall be marked with the manufacturers identification. Each straightedge shall have a hole The Material: Corrosion-resisting steel, smooth on both sides. Types: Types of straightedges shall be shown below: Type Description I - Squared Edge B
4、oth edges squared for full thickness II - One edge beveled One edge squared for full thickness. The other edge shall be squared for a uniform thickness and shall be beveled uniformly. Both working edges beveled on one fp additional marking shall be as specified in the contract or order. consignees a
5、ddress. contrasting color, of an appropriate size, and with waterproof materials. Unit, intermediate (when provided), and exterior packs shall be marked Exterior packs shall have in addition the complete Markings shall be applied in a legible manner in a guality assurance. defects. Presence of one o
6、r more defects shall be cause for rejection. The straightedges shall be examined for the following 1, Design not as specified. 2. liaterial not as specifies. 3, Type not as specified. 4, Size not as specified, 5, Graudations and markings not as specified. 6. Packaging and marking not as specified. 4
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- DLAAA50209A1986STRAIGHTEDGESSTEELDRAFTSMENS 绘图 员用钢 直尺 PDF

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