Elements of Surveying |
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Elements of Surveying Raymond Earl Davis,Francis Seeley Foote,William Horace Rayner Snippet view - 1930 |
Elements of Surveying Raymond Earl Davis,Francis Seeley Foote,William Horace Rayner Snippet view - 1930 |
Common terms and phrases
adjustment alidade altitude angular azimuth backsight base line bearing bench marks boundaries bubble calculated celestial celestial sphere chain circle clamped CO-TAN computed contour lines corners correction Cotang cross-hair cross-section curve deflection angles described in Art determined difference in elevation direction dumpy level earth employed ephemeris equator error of closure established field foresight distances given grade graduated ground points head chainman hence horizontal angles horizontal distance hour angle instrument intersection Lati latitudes and departures length level tube line of sight longitude magnetic magnetic bearings mean measured meridian method miles objects observed offsets parallel plane table plotted Polaris position precision probable error protractor refraction right ascension rod reading scale screws side slope solar stadia interval stakes star surveyor surveys systematic errors taken tangent tape telescope tion topographic township tract transit is set transit station triangle tude usually values vernal equinox vernier vertical angles