Apparatus for correcting theodolites

Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle

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Details

33281, 33283, 33366, 33377, 33391, 33 1T, 33 1PT, 250231SE, 250237G, 356141, 356149, G01B 1126, G01C 100, G01D 534

Patent

active

041369556

ABSTRACT:
The corrected values to compensate for errors in instrumental levelling of a theodolite and similar instruments are found by determining angles of elevation and/or horizontal directions, measuring the instrumental levelling errors, and calculating the error free values of the instrument.

REFERENCES:
patent: 2883594 (1959-04-01), Alberts
patent: 2943529 (1960-07-01), Baker
patent: 3617131 (1971-11-01), Taguchi
patent: 3657551 (1972-04-01), Lingert et al.
patent: 3729260 (1973-04-01), Walsh
patent: 3945129 (1976-03-01), Bergkvist
patent: 3985448 (1976-10-01), Wiklund et al.
AGA, Geodimeter Model 700 (Brochure), Mar. 2, 1972, 356-365.

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