International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 136
slymentioned are only approximate, the degree of accuracydepending upon the largeness of the scale and the skill ofthe draftsman. The method of calculating content bylatitudes and departures is perfectly accurate, and does notrequire the previous preparation of a plat. 1334. Definitions.—If a… … Fig. .322. minus if west. The distance of the middle point of any line,such as the side of the field, from the meridian is called thelongitude of that side. The difference of the longitudesof the two ends of a line is called the departure of the line;the difference of the latitudes of the two ends…
Railroad engineering
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