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Application: Widely used in production site to measure surface roughness of various machinery-processed parts. Manual or automatic shut down. The tester can be switched off by pressing the Power key at any time. On the other hand, the tester will power itself off about 5 minutes after the last key operation. Technical Specifications * Multiple parameter measurement: Ra, Rz, Rq, Rt *Measuring Range: Ra, Rq: 0.005~16.00µm / 0.020~629.9µinch; Rz, Rt: 0.020~160.0µm / 0.078~6299µinch * Accuracy: < ±10% * Fluctuation of Display Value: ≤6% * Resolution: 0.001/0.01/0.1 * Sensor: Radius of Probe Pin: 5µm Material of Probe Pin: Diamond Measurement Force of Probe: 4mN(0.4gf) Probe Angle: 90º Vertical Radius of Guiding Head: 48 mm Maximum Driving Stroke: 17.5mm/0.7inch Cutoff length(l): 0.25mm,0.8mm,2.5mm * Driving Speed Sampling: When Length=0.25mm,Vt=0.135 mm/s When Length=0.8mm,Vt=0.5mm/s When Length=2.5mm,Vt=1mm/s Returning: Vt=1mm/s * Profile Digital Filter: RC,PC-RC,GAUSS,D-P * Evaluation Length: 1~5L Optional * Data Memorize: 7 Groups * Operating Conditions: Temp:0~50ºC, Humidity: