Elements of military sketching and map reading (1917)
Barnes, John Bryson, 1876- · New York : D. Van Nostrand · leaf 48
Fig. 2.V contour planes a,a,a (Fig. 26. See also Figs. 22 and24). Assuming that this V.I. is 20 feet, the differencesin elevation of A, B, C, D, (Fig. 26), is then 20feet. It will be seen that the total M.D. betweenA and E (Figs. 26 and 26A) is greater than the totalM.D. between F and E, though the… … Fig. 26A. 40 ELEMENTS OF MILITARY SKETCHING
Military topography · Maps, Military
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