A strain-gauge, brushless torque meter
Is Version Of
A universal, brushless strain-gauge torque meter employing a force-balance system designed and developed. Full scale reading of recording systems at any given torque range secured by use of changeable conical seat inserts and semi-conductor strain gauges.
The following article is from Journal of Agricultural Engineering Research 17 (1972): 231–235, doi:10.1016/S0021-8634(72)80026-X.