Surveying ; a manual of practical instruction in the art of plane surveying, including plotting, leveling, triangulation, line running, cross-sectioning, traversing, and other details of field work (1910)
American School of Correspondence, Phillips, Alfred Edward, 1863- [from old catalog] · Chicago, American school of correspondence · leaf 34
er lineof the page correspondapproximately with theNorth and South lines. Second, hij JVotesAlone. Use the left-hand page of the notebook beginning at thebottom as before. Donot crowd the notes, andif necessary use two ormore pages. See Fig. 19. Fig. 19 shows themethod of keeping thenotes of the s… … THE VERNIER. The vernier is an auxiliary scale for measuring with greaterprecision the spaces into which the principal scale is divided. Thesmallest reading of the vernier, or the least count, is the differencein length, between one division on the main scale and one on thevernier. A vernier is…
Surveying
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