Patent ID: 9417054
Filing Date: 2016-08-16
CPC Classification: G01B,H02G

Claim Text:
1. An assembly comprising: one of a fish tape device and a duct rodding device, the device having an opening through which a user's hand can be inserted, and a flexible tape provided in the housing, an end of the tape having an eye thereon configured to be connected to a cable or wire, the tape being capable of being paid out of the housing and retracted into the housing; and an optical sensor attached to the device, the optical sensor being positioned proximate to the tape, the optical sensor using digital image correlation to take successive images of the tape as the tape passes by the optical sensor to determine a length of tape that has passed by the optical sensor; and a processor in communication with the optical sensor, the processor configured to calculate a length measurement of tape that has passed by the optical sensor.