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Maps and survey (1913)

Hinks, Arthur R. (Arthur Robert), 1873-1945 · Cambridge : University press · leaf 146

An illustration from Maps and survey, 1913, leaf 146
hand, but which then become almost selfobvious. We will confine ourselves to some general remarks oncompasses and their use. The compass card must be graduated right round from o to360°. Any other method of division is almost useless. Thereadings increase as one turns from magnetic north,… … The Service Protractor. Compass Sketching. COMPASS AND PLANE TABLE SKETCHING 103 or the card will rattle about, and the point of the needle onwhich it rests will be blunted. To try if the point is in good condition, open the cover outflat and lay the compass on a level table (as in Plate XIV).When…

Maps · Surveying

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