A 19th-Century brass theodolite, signed Sickler in Carlsruhe No 31, the telescope with rack and pinion focusing, lens cap, graduated bubble level on axis with the vertical circle, the silvered scale with single vernier and magnifier, raised on twin supports from the horizontal circle, with twin verniers, tangent screw fine adjustment and clamp, universal bubble level and 3 screw tripod mounting, in carrying case with repaired trade label dated October 1892 by Ludwig Tesdorpf. See illustration
A 19th-Century brass theodolite, signed Sickler in Carlsruhe No 31, the telescope with rack and pinion focusing, lens cap, graduated bubble level on axis with the vertical circle, the silvered scale with single vernier and magnifier, raised on twin supports from the horizontal circle, with twin verniers, tangent screw fine adjustment and clamp, universal bubble level and 3 screw tripod mounting, in carrying case with repaired trade label dated October 1892 by Ludwig Tesdorpf. See illustration
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