OTI Precision Digital Spherometer
For spherical radius measurements of optical surfaces.
The O.T.I. Digital Spherometer sets new standards of precision.
Comprises a set of six rings, 11 to 160mm nominal pcd. Each ring is fitted with 3 tungsten carbide balls.
Each ring carrying a collet to gently locate a HEIDENHAIN MT25 probe.
4-decimal place sagitta reading accuracy.
Pre-programmed computer with printout, for instant computation of results, including tolerance levels.
Bench stand or hand held mode of operation.
Calibration traceable to NPL certified test plate pairs.
Unknown radius determination better than 0.05% of nominal value.