Digital display tape measuring device

Details Digital display tape measuring device Digital display tape measuring device

2005-05-31

2005-05-31

Smith, R. Alexander (Department: 2859)

Geometrical instruments

Distance measuring

By flexible tape

C033S768000, C033S771000

Reexamination Certificate

active

06898866

ABSTRACT:
A digital display tape measuring device is disclosed having a display screen exteriorly for displaying the measured distance. A tape having electrical conductivity capabilities and an insulator disposed longitudinally along the tape dividing the tape into two electrical conductors, and having a tip thereof electrically connecting both of the electrical conductors together such that an electrical circuit is formed with resistance that varies as the tape is extracted from device. An ohmmeter electrically coupled across the electrical circuit for measuring the circuit resistance. A microprocessor having inputs thereof coupled to outputs of the ohmmeter and having outputs coupled to said display screen. The microprocessor computes measurements made by as a function of the resistance measured by the ohmmeter.

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