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 190
No. 35. For Leveling and Stadia Work.Painted on either heavy or light canvas, with a legible design to read to hun-dredths of a foot. The numerals of the tenths are black and one-tenth of a foot high;the foot numerals are red and two-tenths of a foot high. Length, 10 or 12 feet.May be rolled up in… … No. 36f. EQUATORIAL. 9-inch aperture; focal length, n 10 (See the following page.)(t See introduction to Part IV.) EQUATORIAL REFRACTORS. Improved mounting upon a rectangular pillar, containing the strong drivingclock. All necessary adjustments and manipulations possible from the eye-piece. The…
Surveying
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