... Multiple parameter measurement: Ra, Rz, Rq, Rt 2)Highly sophisticated inductance sensor Surface Roughness Tester:1)Multiple parameter measurement: Ra, ... parameter measurement: Ra, Rz, Rq, Rt* Highly sophisticated inductance sensor* Four wave filtering methods : RC, PC-RC, GAUSS and ... for statistics, printing and analyzing by the optional cable and the software for RS232C interface.*Manual or automatic ...