Detailed Product Description                                        
                     
						
	 
	The roughness of metal and non-metallic surface
	Pocket-size & economically price
	Large measuring range suitable for most materials
	Features external calibration at keyboard
	Optimized electric circuit design with transducer structure-design,high integrate power, driver and display. 
	Select freely with Ra,Rz parameters.
	It could test ex-circle, flat surface, conical surface and also test groove with length and width larger than 80*30mm.
	 
	Specification:
	Testing parameters(µm ):Ra、Rz
	Stroke length(mm):6
	Sample length(mm): 0.25 ,0.80 ,2.50
	Evaluation length(mm):1.25 ,4.0 ,5.0
	Measuring range(µm ): Ra:0.05 ~ 10.0  Rz:  0.1 ~ 50
	Error:±10%
	Variability:<12%
	Transducer contacting pin round diameter and angle:
	Contacting pin round diameter:10 µm±1 µm
	Battery:3.7V Li
	Size:106 mm×70 mm×24 mm
	Weight:200g
	Sensor needle static force and its rate of change:
	Stylus static force:  ≤ 0.016N
	Force measuring rate of change:  ≤ 800N/m
	Working conditions:
	Temperature:-20℃~60℃
	Relative humidity:<  90%
	No shake and coercivity around