Error correction system for length or angle measuring instrument

Details Error correction system for length or angle measuring instrument Error correction system for length or angle measuring instrument

1985-01-08

1986-02-11

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

G01B 1104

Patent

active

045691380

ABSTRACT:
A length or angle measuring instrument includes a measuring scale which is perforated. The perforations are engaged by gear wheels which operate to stretch or compress the scale in order to compensate for measuring errors of the measuring graduation as well as for errors in the guides of the object to be measured. This system can be used to compensate both linear and non-linear errors.

REFERENCES:
patent: 4060903 (1977-12-01), Ernst
patent: 4170829 (1979-10-01), Nelle
patent: 4517742 (1985-05-01), Ernst

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