Applications:
Widely used in production site to measure surface roughness of various machinery-processed parts,calculate  correspondingparameters according to selected measuring conditions and clearly display all measurement parameters.
* Be compatible with four standards of ISO, DIN, ANSI and JIS. When measuring the roughness of a surface, the sensor is placed on the surface and then uniformly slides along the surface by driving the mechanism inside the tester. The sensor gets the surface roughness by the sharp built-in probe. This roughness causes displacement of the probe which results in change of inductive amount of induction coils so as to generate analogue signal, which is in proportion to the surface roughness at output end of phase-sensitive rectifier. The exclusive DSP processes and calculates and then outputs the measurement results on LCD.
* Multiple parameter measurement: Ra, Rz, Rq, Rt.
* Highly sophisticated inductance sensor.
* Four wave filtering methods : RC, PC-RC, GAUSS and D-P.
* Small in size, light in weight and easy to use.
*Manual or automatic shut down.
* Can memorize 7 groups of measurement results and measuring conditions for later use or download to PC.
* Metric /Imperial Conversion.
* Use "USB data output" and "RS-232 data output" to connect with PC.
* Provide "Bluetooth ? data output" choice.
Display   4 digits, 10 mm LCD, with blue backlight
Parameters   Ra,Rz,Rq,Rt
Measuring Range
Ra,Rq:0.005~16.00 um / 0.020~629.9 uinch
Rz,Rt:0.020~160.0 um / 0.078~6299 uinch
Accuracy   ≤ ± 10%
Fluctuation of display value   Not more than 6%
Sensor   Test Principle   Inductance type
Radius of Probe Pin   5 um
Material of Probe Pin   Diamond
Dynamo-measurement of Probe   4 mN(0.4 gf)
Probe Angle   90°
Vertical Radius of Guiding Head   48 mm
Maximum driving stroke   17.5 mm / 0.7 inch
 Cutoff length (l)   0.25 mm / 0.8 mm / 2.5 mm optional
Driving speed   Sampling   When Length = 0.25 mm, Vt = 0.135 mm/s
When Length = 0.8 mm, Vt = 0.5 mm/s
When Length = 2.5 mm, Vt = 1 mm/s
Returning   Vt = 1 mm/s
Resolution   0.001 um, if reading ＜ 10um
0.01 um, if 10um ≤ reading ≤ 100um
0.1 um, if reading ≥ 100um
Evaluation length   1~5 L optional
Auto Power Off
Operating conditions   Temperature: 0~50 ℃   Humidity: ＜ 80 %RH
Power Supply   4 x 1.5v AAA size (UM-4) battery
Dimensions   Main Unit   149 x 67 x 29 mm
Measuring Base   185 x 56 x 47 mm
Weight   485 g
Standard Accessories:
 1. Main Unit
 2. Small Screwdriver
 3. Measuing Base
 4. Adjustable Stand
 5. Standard Sample Plate
 6. Standard Sensor
 7. Sheath of Sensor
 8. Carrying Case
 9. Instruction Manual

Optional Accessories:
 1. Groove Stylus SRP-110
 2. Curvature Probe SRP-120
 3. Extension Rod SER-150
 4. Measurement Stand SRS-1
 5. USB, RS-232C data cable with software
 6. Bluetooth data out put with software