Portable hand-held length probe with tracing-unit-actuated lengt

Details Portable hand-held length probe with tracing-unit-actuated lengt Portable hand-held length probe with tracing-unit-actuated lengt

1979-08-02

1981-06-23

Robinson, Thomas A.

Telegraphy

Systems

Position coordinate determination for writing

33142, 346143, G08C 2100, G08B 522, G01B 312

Patent

active

042752647

ABSTRACT:
A portable hand-held length probe with a length measuring wheel and a tracing unit which is mounted adjacent the wheel and is movable by pressing the tracing unit against a surface to be measured. A wheel movement indicative output signal is effected as function of wheel movement, and the probe carries a switch which is actuated as a function of depress-release movement of the tracing unit to enable or disable transmission of the wheel movement indicative output signal.

REFERENCES:
patent: 3462548 (1969-08-01), Rinder
patent: 3497959 (1970-03-01), Engelsman
patent: 3886311 (1975-05-01), Rodgers et al.

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