Electronic measuring tape

Details Electronic measuring tape Electronic measuring tape

G - Physics

01

B

33/151

G01B 3/10 (2006.01) G01B 11/02 (2006.01)

Patent

CA 1099912

ABSTRACT An electronic measuring tape for automatic reading of a measured length. A tape is provided wound on a spool in a housing and when measuring, the tape is pulled off the spool out of the housing. Means are provided both on the tape and within the housing to generate an optical interference pattern when moving the tape relative to the housing. Means are provi- ded for reading the said interference pattern and electronically providing a measurement based on the interference pattern read.

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