Elements of surveying and levelling; with descriptions of the instruments and the necessary tables (1870)
Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes & Company · leaf 95
AB = 536 yards BAW= 40° 16 yiz., - . WAB = 57° 40 ABB = 42° 22 BBW= 71° 07; required i -he distance BW. … 5. Wanting to know thehorizontal distance between twoinaccessible objects A and B,and not finding any stationfrom which both of them couldbe seen, two points C and B,were chosen at a distance from each other, equal to 200 yards;from the former of these points A could be seen, and from thelatter B,…
Surveying
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