Torque transducers.

摘要

A digital readout torque wrench (1) or screwdriver (60). The tool has a separate spring element (3) which is not required to transmit torque but senses the deflection of the tool as it transmits torque. This separate spring element (3) may form a printed circuit board (23) for electronic circuitry which supplies a signal for a digital readout display (4). The spring element is easily calibrated.