In case of multy rod extensometer discontinuos measuring OTR provide Digital dial gauge.

This is endowed by OTR of an alluminium centering, usefull to insert the gauge inside the extensometer’s sleeve.

How to use of the instrument

Placed next to a multy rod extensometer, power up the dial gauge clicking ON and reset the display, leaving the measuring rod at the end of the stroke. At this point match the gauge to the sleeve of the extensometer to measure and readout the display.

Repeet the operation to check the repetibility  and turn off the device clicking OFF.

If the deepness of the multy rod extensometer  is excessive connect to the dial the extention rod provided by OTR.