0-18 psi (0-1.26 kg/cm2) range. Includes two 9/16 in. (14mm) studs with ¼ in. (6mm) long shank.

The No. 433 Master Proving Ring is supplied with a calibration graph to facilitate the calibration of the of the No. 400 Series Strength Machines.

Specifications:

Net weight: 5 lb. (2.2 kg)