Elements of military sketching and map reading (1917)
Barnes, John Bryson, 1876- · New York : D. Van Nostrand · leaf 38
hand a prolongation of this line in the opposite direc- <S KO / ^, ^/^ Fig. is. tion. To point the hour hand in the direction of thesun, hold a straw perpendicularly between the sun andthe watch and bring the hour hand in its shadow(Fig. 14). At night the approximate true north may be… … 30 ELEMENTS OF MILITARY SKETCHING
Military topography · Maps, Military
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