... battery Evaluation length : 5 cut-off SEPARATE PROBE Ra, Rz, Rq, Rt SURFACE ROUGHNESS TESTER SRT- ... 10 mm LCD, with blue backlightParameters: Ra, Rz, Rq, RtMeasuring Range Ra, Rq: 0.005-16.00um/0 ... Gauss Non-Filtered Profile: D-PResolution : 0.001μm if reading <10μm 0.01μm if ... . Curvature Probe5. Measurement Stand6. Bluetooth interface Ra SRT6400 surface roughness tester,roughness measure instrument