Manual of modern surveying instruments and their uses .. (1893)
Lietz, firm, math. instr. makers, San Francisco. (1893. The A. Lietz company) [from old catalog] · [San Francisco] The Company · leaf 205
. Abneys Kenecting Level or Pocket Altimeter, improved, with divided arc to show gradients, in morocco case, each 15 00 No. 53. Abneys Eeflecting Level or Pocket Altimeter, with bar needle, com-pass and socket for Jacob staff 18 00 A NEW CLINOMETER. The accompanying cut is abont half size and… … Attwoods Clinometer, showing Compass,I s the graduated circle, which is kept in place by a small spring at A, a slighti be -re on the knob of which sets the circle free, and on the removal of the fingersthe instrument can be taken up and the angle of inclination easily read.D represents a compass…
Surveying
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