Scale for use for measurement of the displacement of an object t

Details Scale for use for measurement of the displacement of an object t Scale for use for measurement of the displacement of an object t

1989-06-22

1991-08-13

Haroian, Harry N.

Geometrical instruments

Distance measuring

Error compensation

33707, G01B 304

Patent

active

050384910

ABSTRACT:
A scale, for measuring the displacement of an object to be examined, has a division and a mark for alignment of the division, and a displacement measuring apparatus, for measuring the displacement of a scale, has a device for reading the division of the scale and a detector for detecting the positional error of the division relative to the direction of the displacement.

REFERENCES:
patent: 4587622 (1986-05-01), Herzog
patent: 4628609 (1986-12-01), Rieder et al.
patent: 4777728 (1988-10-01), Ludicke

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