Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 682
tssupporting a horizontal axis,X, on which is fixed anastronomical telescope, L,movable in a vertical plane.The box rests on a foot, P,about which it can turn in ahorizontal plane, taking withit the telescope. A fixedcircle, QR, which is calledthe azimuthal circle, mea- T sures the number of… … ^^^►:lv» vt,r Fig. 634. another vernier, K, which movesoff on a fixed graduated arc, jr. itii the -697] Mariners Compass. 661 The first thing in determining the declination is to adjust the compasshorizontally by means of the screws SS, and the level n. The astronomicalmeridian is then foimd,…
Physics
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