Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 182
be N.If the needle coincides with the N. S. or E.W. line, the bear-ing would be N., S., E., orW., according as the northend of the needle is overN., S, E., or W. As the compass circle isdivided into half-degrees,the bearing may be deter-mined pretty accurately toquarter-degrees. When a fence or… … * The magnetic bearing is meant unless otherwise specified. 10 SURVEYING. Local Disturbances. Before a bearing is recorded, care shouldbe exercised that the chain, pins, and other instruments thatwould affect the direction of the needle, are removed from thevicinity of the compass. Even after the…
Trigonometry · Surveying · Navigation
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