The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 158
linewith AB. This gives a check on the position of the point, and shows the ad-vantages of the second method when it is feasible. ADJUSTMENT, USE, AND CARE OF INSTRUMENTS. 12/ CHAPTER VI. ADDITIONAL INSTRUMENTS USED IN SURVEYING AND PLOTTING. THE ANEROID BAROMETER. 136. The Aneroid Barometer… … FlG. 29. rugated cover at higher temperatures. This cover rises orfalls as the outer pressure is less or greater, and this slightmotion is greatly multiplied and transmitted to an indexpointer moving over a scale on the outer face. The motionof the index is compared with a standard mercurial…
Surveying
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