An automatic polishing controller that uses a microprocessor to measure the resonance frequency while polishing, monitor it as the piezoelectric material is being lapped and polished, and stop the operation when the desired frequency is reached.
Nearly every 2-way or 4-way polishing machine made by any manufacturer may use it.

Target Product          Control device for silicon wafer polishers                               
Control Thickness Range100 - 1600 φm
Measurement Precision0.1 %
WR Probe3.5 MHZ - 99 MHz
Reproducibility100 ppm MHz
Exterior Dimensions290(W)x290(D)x70(H)