A treatise on surveying, comprising the theory and the practice ; (1887)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, 1840- [from old catalog] ed · New York, D. Appleton and company · leaf 509
accuracy, anchor at some point, and determine itsplace as above, and then proceed to another point, paying out aline, fastened to the anchor, and sounding at regular distances.Cast anchor at the second point, go back to the first, take up theanchor, go on to the second, and then proceed as before.… … 494: MARITIME OR HYDROGRAPHICAL SURVEYING. all the points can be determined by any of the methods of survey-ing. This is the mostFig. 535. accurate method of ^m sounding. 734. On the sea-coast the soundingsmust all be reduced tomean low spring-tides. 735. Tide-Gauges. Tidal observations consist in…
Surveying
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