A treatise on surveying, comprising the theory and the practice (1906)
Gillespie, William Mitchell, 1816-1868, Staley, Cady, 1840- · New York D. Appleton · leaf 360
on maps to avery small scale. The referetices — numbers Fro. 5i6. giving the elevation of the contour — areplaced on the upperside of the contourwith their bases rest-ing on the contour, orin breaks left in tliecontour. These refer-ences are more prominent and look better if they follow a line… … 350 TOrOGEAPnT. If a summit or a depression can not be shown as accurately asdesired with tlie contour interval used, an intermediate contour isdrawn in a broken line to distinguish it from the others, and at thesame time its elevation is marked. 796. Hill Shading. There are three different methods…
Surveying
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