Telescope level adjusting means

Details Telescope level adjusting means Telescope level adjusting means

1977-09-09

1978-09-12

Martin, Jr., William D.

Geometrical instruments

Straight-line light ray type

Level

33 88, 33275R, 33284, G01C 102, G01C 928

Patent

active

041125843

ABSTRACT:
Fine adjustment of a surveying instrument telescope reference spirit level is effected by rotating the bubble vial of the level about an axis which is slightly angularly displaced from the longitudinal axis of the vial.

REFERENCES:
patent: 1278148 (1918-09-01), Heusser
patent: 1882523 (1932-10-01), Rothweiler
patent: 2132171 (1938-10-01), Langsner
patent: 2941297 (1960-06-01), Howley et al.
patent: 2948066 (1960-08-01), Rosenholm

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