Cherne® Proving Rings are used to verify deflection gauge sizes and are available in standard and custom sizes.
Cherne® PROVING RING, 6 IN. 5% Deflection, SDR 35
Cherne® PROVING RING, 8 IN. 5% Deflection, SDR 35
Cherne® PROVING RING, 10 IN. 5% Deflection, SDR 35
Cherne® PROVING RING, 12 IN. 5% Deflection, SDR 35
Cherne® PROVING RING, 15 IN. 5% Deflection, SDR 35
Cherne® PROVING RING, 8 IN. 7.5% Deflection, SDR 35
Cherne® PROVING RING, 10 IN. 7.5% Deflection, SDR 35
Cherne® PROVING RING, 12 IN. 7.5% Deflection, SDR 35
Cherne® PROVING RING, 18 IN. 5% SDR 35 ST