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 atmospheric refraction azimuth backsight and foresight base line bearing bench marks boundaries bubble calculated called circle clamped clinometer CO-TAN compass computed contour contour lines corner correction Cotang cross-hair cross-section curve cut or fill deflection angles described in Art determined difference in elevation direction dumpy level earth employed error of closure established eyepiece feet foresight distances given grade graduated head chainman hence horizontal angles horizontal axis horizontal distance hour angle instrument intersection interval Lati length level tube line of sight magnetic magnetic bearings means measured meridian method needle objective observed parallel perpendicular plane table planimeter plotted Polaris position precision probable error protractor refraction rod reading rotated scale side slope stake stadia surveyor surveys systematic error taken tangent tape telescope tion topographic transit is set transit station traverse triangle tude turning point usually vernier vertical angle vertical axis wyes zero