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 459
made clear when the subject of the adjustment ofthe observations is considered. 329. The Base-line and its Connections.—The linewhose length is actually measured is called the base-line. The * Taken from the U. S. C. and G. Survey Report for 1876. 428 SURVEYING. lengths and distance apart of such… … yve&t Base MorganPark Fig. 117.* 600 miles apart. In general, in primary work, the distanceapart has been about one hundred times the length of thebase. Secondary bases are from two to three miles in length, ^^Park flidge Lombard ^~~-j^___ ^W^ c HI c AGOShot ToivefEif. \ j MB. West Base■Willow…
Surveying
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