Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 361
F SURVEYING. [book X. the bottom of the shaft; the transit being at the second station,K, and the telescope turned in the direction of the first station,D, the straight-edge is moved by an assistant until both are seenin line from K, their plane then passes through the first course;and if the line… … Fig. 183. 395. SECOND METHOD. Let the transit, providedwith a diagonal eye-piece,be planted over the stationD, at the foot of the shaft,and after being leveled, letit be directed on the sta-tion K. Then, withoutchanging the plane ofvision, let the transit bedirected to the top of theshaft, and let…
Surveying
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