Specification :

Features
The exclusive DSP processes and calculates and then outputs the measurement results on LCD.
* Very easy to operate
* Multiple parameter measurement: Ra, Rz
* Highly sophisticated inductance sensor
* Built-in lithium ion rechargeable battery and control circuit with high capacity
* Small in size, light in weight and easy to use
* Can communicate with PC computer for statistics, printing and analysing by the optional cable and the software for RS232C interface.
* 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.

Specifications:
Display 4 digits, 10 mm LCD, with blue backlight
Parameters: Ra, Rz
Display Range
Ra: 0.05-10.00um/ 1.000-400.0uinch
Rz: 0.020-100.0um/ 0.780-4000uinch
Accuracy: Not more than 10%
Fluctuation of display value: Not more than 6%
Sensor :
Test Principle: Inductance type
Radius of Probe Pin: 10um
Material of Probe Pin: Diamond
Measurement Force of Probe: 16mN( 1.6gf)
Probe Angle: 90°
Vertical Radius of Guiding Head: 48mm
Maximum driving stroke: 17.5mm/ 0.7inch
Cutoff length ( l) : 0.25mm / 0.8mm / 2.5mm optional
Evaluation length: 1~ 5 cut off optional
Driving speed:
sampling length = 0.25mm Vt= 0.135mm/ s
sampling length = 0.8mm Vt= 0.5mm/ s
sampling length = 2.5mm Vt= 1mm/ s
returning Vt= 1mm/ s
Resolution : 0.001¼ m if reading  10¼ m
0.01¼ m if 10¼ mdreading 100¼ m
0.1¼ m if reading e100¼ m
Power Li-ion battery: rechargeable
Operating conditions: Temp. 0~ 50
Humidity