Proving Rings

We are offering proving rings.
The series 200 proving ring, while similar to the series 100, has three performance-proven features which increase its accuracy. It has a larger 200-division dial, a finer-pitch micrometer screw and a greater deflection under load. As a result, its uncertainty is reduced and operator confidence is improved. Ease of use is further increased with the adjustable vernier index. Readings to 1/10 division and interpolation to 1/20 division are possible. Because the index is adjustable, the dial will actually read zero on the no-load reading. The series 200 proving rings are suggested for calibrating load cells and materials testing machines where high degree of accuracy are desired. All capacities are available in compression types and combination compression/ tension types with threaded external bosses to which pulling rods may be attached for use in tension calibrations.