Maps and map-making; three lectures delivered under the auspices of the Royal geographical society (1910)
Reeves, Edward Ayearst, 1862-1945, Royal Geographical Society (Great Britain) · London, The Royal geographical society · leaf 118
has decided advantages.Fig. 100 is a specimen of an Indian surveyors plane-tablesheet. The principle is that of constructing similar angles SURVEY METHODS 99 and figures, and to make it clear I must refer you toFig. 101. The plane-table consists, in its simplest form,of a board on a tripod stand,… … Fig. 99.—Plotting of Prismatic Compass Traverse. at A, one end of this base. Then the alidade is sightedon to B, the other end of the base, and a line drawnon the board to any suitable scale to represent the base-line. With the alidade on the point A, all definitepoints in the country are sighted,…
Cartography · Surveying
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