Proving Rings have a repeatability of 0.2% and an accuracy of 1% or better. They are supplied with a dial indicator, 0.2 in range and 0.0001 in divisions.
The rings have tapped female ends, 1/2 in – 20 threads. Each ring is supplied with a calibration chart.
|E-712||2000 lbf (1.1 kN)||1%||2.0|