Elements of military sketching and map reading (1917)
Barnes, John Bryson, 1876- · New York : D. Van Nostrand · leaf 87
pad near the top, and knotted at ex-actly 15 inches, is used to insure the paper being heldat the same distance from the eye each time a sightis taken. With this length of cord, the interval between linessubtends, or measures, a space of 50 mils. If animprovised pad is being used (as a matter of… … LANDSCAPE SKETCHING 79 4+^W r- U! t^^ji^ ij-r Soil A :nI;-- -: j —jrrif^UTJjXiT -\- »? 5 2 i i 0/
Military topography · Maps, Military
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