Product Specifications/How To Use
Is the accuracy of Tohnichi torque devices stated as a percentage of “full scale” (F.S.) or "reading" (RD)?
Tohnichi product accuracy is specified as a percentage of the displayed value reading (% RD), not as a percentage of the full scale value (% FS). The diagram below shows in simple terms the relationship between RD and FS for a margin of error of ±3%. When the margin of error is specified as ±3% FS, accuracy will be seriously impacted at low force torque. On the other hand, when the margin of error is specified as ±3% RD, that is for the displayed value in the measurement range (or torque range), so even for a low torque force the impact of ±3% would be only the same percentage.