3.3.7 Cases. When specified, cases shall be supplied with the indicators or test sets. The case shall possess sufficient strength and durability to withstand the conditions encountered during normal shop use. It shall be designed to house compactly, and hold securely, all component parts, as specified, including the indicator.
TABLE IV
National Stock Number |
Style, Type, Accessories required |
5120-00-432-9235 |
Type A, Style I, plunger type contact point action, angular base stop, standard stanchion base, case, jeweled bearings. |
5120-00-293-3016 |
Type A, Style II, 1/4 inch long regular shape contact point, standard stanchion base without base stops, with offset arm, reducing bushing, tool post holder, case, jeweled bearings. |
5120-00-177-4191 |
Type A, Style III, with revolution counter, jeweled bearings, telltale hand, plunger type contact point action, regular. |
5120-00-243-9649 |
Type A, Style III, with revolution counter. |
5120-00-277-8840 (Test Set) |
Type B, Style III, plunger type contact point action, standard, button and shall contact points, hole attachment, arbor clamp, tool post holder with upright post, clamp, case, jeweled bearings. |
5120-00-377-6525 |
Type B, Style III, same accessories as 5120-00-277-8840 but with cone contact point in lieu of ball contact point, plunger type contact point action, case, jeweled bearings. |
5120-00-273-9791 |
Type C, Style I, nonmagnetic type with ball contact point, lever gear assembly and hairspring made of nonmagnetic material and with holding bar with swivel clamp, cushioned movement, case, jeweled boardings. |
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