Reference mark selection arrangement for measuring instrument

Details Reference mark selection arrangement for measuring instrument Reference mark selection arrangement for measuring instrument

1983-01-20

1984-07-17

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

250237G, G01B 1102, H01J 314

Patent

active

044597509

ABSTRACT:
An incremental measuring instrument having a series of reference marks extending alongside a division of a scale is provided with a selector element which is slideable along the length of the scale and can be aligned with a selected one of the reference marks in order to bring the selected reference mark into operation. The position of the selector element with respect to the selected reference mark is fixed by a plurality of filler elements which cooperate with a selector element to form a column of elements arranged end to end within a guide. Holding elements at the ends of the guides preclude undesired longitudinal movement of the column of elements.

REFERENCES:
patent: 3982106 (1976-09-01), Stutz
patent: 4101764 (1978-07-01), Nelle
patent: 4158509 (1979-06-01), Rieder et al.
patent: 4363964 (1982-12-01), Schmitt
patent: 4385836 (1983-05-01), Schmitt
patent: 4400890 (1983-08-01), Ohkubo et al.
patent: 4403859 (1983-09-01), Ernst

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