Topographic surveying; including geographic, exploratory, and military mapping, with hints on camping, emergency surgery, and photography (1905)
Wilson, Herbert Michael, 1860-1920 · New York : J. Wiley · leaf 445
ch it thus receives in riding or walkingis just sufficient to keep the needle from sticking and aid itin responding to the changes of altitude. In reading it itshould invariably be held in the same position. Some preferto hold it horizontally, the better way, however, is to hold itvertically in… … the sliding foot-scale of the aneroid should be revolved so thatthe hand shall point to the altitude of the camp or otherknown elevation near the starting-point. On arrival at the fieldof work the aneroid should be again read at some point theelevation of which is known, and the effect of…
