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 150
1, Fig. 27. h … F10. s8. 122 SURVEYING. other objects on the ground, the alidade is made to revolve aboutp just as the transit revolves about its centre. A needle issometimes stuck at this point, and the ruler caused to pressagainst it in all pointings, but this defaces the sheet. Otherpointings are now made to B,…
Surveying
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