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 122
Slfdion A 2i- (^S^S^IAT MAP OF FAIUI. … 120 ELEMENTS OF SUETEYES-G. [BOOK H. At B, the bearing of the northernmost chimney of the farm-honse is taken (X. T3° E.) Such bearings serre two purposes.They aid in the location of the objects observed, npon the map, and serve also, in case of errors, to aid in detecting theirlocation. In…
Surveying
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