Grade measurement device

Details Grade measurement device Grade measurement device

1997-01-30

2000-01-04

Hantis, K P

Optics: measuring and testing

By alignment in lateral direction

33286, 33293, G01J 328

Patent

active

060116285

ABSTRACT:
A grade measurement device for use with a transmitter operable to produce a radiant energy beam. The grade measurement device includes a base and a support member. The support member is movably coupled to the base. A detector operable to detect the radiant energy beam is disposed on the support member at a selected position. The detector is also operable to indicate detection of the radiant energy beam. A connection mechanism couples the support member and the base.

REFERENCES:
patent: 3314068 (1967-04-01), Verive
patent: 3367031 (1968-02-01), Ward
patent: 3894230 (1975-07-01), Rorden et al.
patent: 4030832 (1977-06-01), Rando et al.
patent: 4240208 (1980-12-01), Pehrson
patent: 4345382 (1982-08-01), Warren
patent: 4471532 (1984-09-01), Francis
patent: 4993160 (1991-02-01), Fraley

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