What people are saying - Write a review
We haven't found any reviews in the usual places.
MEASUREMENTS OF ANGLES AND DIRECTIONS
MEASUREMENT OF DISTANCE
44 other sections not shown
Other editions - View all
adjustment alidade altitude angular atmospheric refraction azimuth backsight base line bearing bench marks boundaries bubble chaining clinometer Co-tan compass computed contour interval contour lines coordinates corner correction Cosine Cotang cross hair cross sections curve described in Art determined Diff difference in elevation direction dumpy level earthwork employed ephemeris error of closure established eyepiece field foresight distances given grade graduated ground points head chainman horizontal distance instrument intersection latitudes and departures level tube line of sight logarithm magnetic bearing means measured meridian method objects observed offsets parallax parallel perpendicular photographs plane table plane-table plotted plumb Polaris precision probable error problem procedure refraction rod reading scale screws side significant figures slide rule slope stakes stadia interval surveyor surveys systematic errors taken tangent tape length telescope tion topographic tract transit station traverse line triangle usually vertical angle vertical vernier wyes