... measurement results on LCD. * Multiple parameter measurement: Ra, Rz, Rq, Rt * Highly sophisticated inductance sensor * Four wave filtering methods : RC, PC ... , 10 mm LCD, with blue backlight Parameters: Ra, Rz, Rq, Rt Measuring Range Ra, Rq: 0.005-16.00um/0.020 ... -629.9uinch Rz,Rt: 0.020-160.0um/0.078-6299uinch Accuracy: ≤±10% Fluctuation ...