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Exercises in Compass Surveying
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adjustment alidade auxiliary telescope axis azimuth bearing bench-mark boundary bubble calculated celestial pole celestial sphere center-line central angle chord computations contours coordinates corner correct Cotang Tang Cotg cross-section curve deed deflection angle determined difference in elevation dumpy level earth error excavated eyepiece feet fence ft ft ft given grade graduated ground Gunter's chain highway horizontal hour angle inch instrument intersection Land Office latitude length line of sight located logarithms magnetic declination main telescope measured meridian method move N.cos N.sine necessary needle observer obtained paper parallel placed plane planimeter plate plotted plumb-bob Polaris quarter-section railroad recorded right angles rodman scale screws shown in Fig slide rule solar attachment spirit level stadia stakes steel tape stope survey surveyor taken Tang Cotang tangent tapeman tion township transit points traverse triangle tt tt usually vernier vertical angle zero