Distance measuring gauge using relative movement between...

Details Distance measuring gauge using relative movement between... Distance measuring gauge using relative movement between...

G - Physics

01

B

33/48

G01B 9/02 (2006.01) G01B 3/24 (2006.01) G01B 11/00 (2006.01) G01D 5/38 (2006.01)

Patent

CA 1087389

ABSTRACT OF THE DISCLOSURE A hand held digital read-out measuring instrument in which interference fringes are generated by the transmission of radiations through gratings which move relative to one another according to a distance being measured and the fringes are counted to detect changes in the fringe pattern and generate a pulse output related to the distance, means being provided to control the rate of movement and to exert a substantially constant force on the movable elements.

249931

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