SHIMPO TRC-Series - Manual (Page 17)

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The adapter is a consumable product.
Replace the adapter when it is impossible to perform a repeatable measurement.
7.3 Zero Adjustment
In “Mean” mode, press the Zero key when the display does not display “0” and no torque is applied.
In “Peak" mode, press the Zero key when the display does not display “0” if the automatic peak reset
function is not activated.
7.4 Measuring
The measured torque data is displayed with a given torque test.
When the TRC is in “Peak” mode, press Reset key to reset the Peak function before the next torque test.
NOTE: Peak reset cannot operate while torque is applied.
Spring returns Spring shrinks
Loosen (CCW direction) Tighten (CW direction)