Elements of military sketching and map reading (1917)
Barnes, John Bryson, 1876- · New York : D. Van Nostrand · leaf 69
e, etc., are located by intersec-tions from the base line A—D. The line A—D wasselected because points A and D are on prominentground and visible from each other, the distance-^—Dcan be measured by pacing, other prominent featurescan be sighted on from A and D, or from pointson the line A—D. The… … sTco/e^x 6 = /miy./. « /O ■75 Hallio*/n To ■facfary 6^2, mi ^mi. Plate A. POSITION SKETCHING 6i
Military topography · Maps, Military
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