Theodolite tangent screw system

Details Theodolite tangent screw system Theodolite tangent screw system

1979-05-18

1980-05-13

Stephan, Steven L.

Geometrical instruments

Straight-line light ray type

Instrument support

33281, G01C 100

Patent

active

042021103

ABSTRACT:
Azimuth and elevation adjustments in a geodetic instrument are provided by systems which include coaxial locking and two-speed adjustment control knobs. In each such system, the control knobs are accessible at both the front and rear of the instrument to facilitate operation in either of the forward- or back-sighting mode.

REFERENCES:
patent: 3093904 (1963-06-01), Baker
patent: 4084327 (1978-04-01), Kooi
patent: 4146927 (1979-03-01), Ericksen et al.

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