Angle measuring apparatus

Details Angle measuring apparatus Angle measuring apparatus

1979-12-04

1982-03-09

Martin, Jr., William D.

Geometrical instruments

Miscellaneous

Light direction

250231SE, G01B 730

Patent

active

043182259

ABSTRACT:
Angle measuring apparatus including a disc having a circular track of marks on one surface concentric with the disc, such disc being rotated about its axis. A mark sensor located adjacent the disc surface detects each mark and generates a signal as it passes thereby. A pair of angle-input means are located adjacent the disc for defining the angle to be measured. Reference means rotate with the disc and interact with each input-means to generate a reference signal each time the reference means passes thereby. Control circuitry counts the number of mark signals occurring between selected reference signals and from such count, the defined angle can be accurately computed.

REFERENCES:
patent: 3116886 (1964-01-01), Kuehne

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