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Problem Page 1 Chaining over Level Ground with Tape
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adjustment alidade atmospheric refraction azimuth bench marks boundary clamped clinometer Co-tan compass computed contour lines coordinates corner correction Cosine Sine Cosine Cotang cross-hair cross-sections curve deflection angle described in Art determined difference in elevation direct leveling dumpy level earthwork employed engineer's level error of closure established eyepiece feet field problem given grade graduated ground points hand level head chainman horizontal angle horizontal distance instrument intersection latitudes and departures length level tube leveling screws line of sight linear magnetic bearing magnetic declination means measured meridian method Object.—To objects observed office problem offsets parallel perpendicular plane table plotted location Polaris precision refraction roadway rod reading side Sine Cosine Sine slope stakes stadia interval survey surveyor's compass Table VIII.—Continued taken Tang tangent tape telescope tion topographic map tract transit stations transit surveys traverse line triangle usually vernier reading vertical angle vertical axis vertical vernier wyes zero