International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 135
1.77 + 2.67 1 0.00 0.00 724 LAND SURVEYING. we draw a meridian through the point taken as Station 1,Fig. 321. Scale off from Station 1 upwards on this meridianthe latitude 2.20 chains to A and to the right from A, andperpendicularly lay off the departure 1.5-i chains to Station2. Join 1-2. From 1… … A and -■>, laying off -[- latitudes above Station 1 and +departures to the right of the meridian, and — latitudesbelow Station 1 and — departures to the left of the merid-ian. The principal advantages of this mode of plattingare rapidity of work, the fact that each course is…
Railroad engineering
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