... .FEATURESThis instrument is compatible with four standards of site to measure surface roughness of variousmachinery-processed parts, calculate corresponding ... Ra, Rz, Rq, Rt* Highly sophisticated inductance sensor* Four wave filtering methods : RC, PC-RC, GAUSS and D ... 6%SensorTest Principle: Inductance typeRadius of Probe Pin: 5Material of Probe Pin: DiamondDynamo-measurement of Probe: 4mN(0.4gf) ...