International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 350
lance attached at B. The hind tapeman, standing at A^ holds the tape abovethe stake until it is in a horizontal position. The tapecarries a rider containing a spirit level and a small eyethrough which the plumb-bob cord is passed. There aretwo rear tapemen. One holds the tape and gives it the… … bob, and reads the tape. The reading is then recorded.The rear tapemen then change places and repeat the workand record the measurements. Each man must read and 2E ||iiii a|iiiiliiii]iiiiliin|& w^ J E mfL„i.„?l„„i„:?l^^ Fig. 437 record his measurements independently of the other, in orderthat…
Railroad engineering
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