Tension And Compression type Proving Ring

Tension Compression Proving Rings are having standard 1/2" (BSF Threads) and for measuring tension , 2 Nos. tension rods having male threads at both ends are supplied.For measuring loads in compression these tension rods are removed and the ring can be used in usual way.Works calibration charts for tension and with each ring . Supplied complete with tension rods in a carrying case.