GAOTek Portable Surface Roughness Tester

GAOTek portable surface roughness tester is a new product.



GAOTek portable surface roughness tester is a new product. This tester applies to production site and can be used to measure surface roughness of various machinery-processed parts, calculate parameters according to selected measuring conditions and clearly display all measurement parameters and profile graphs on LCD.



  • Multi-parameter measuring: Ra, Rz, Ry
  • High accuracy inductance sensor
  • Four filtering methods of RC, PC-RC, GAUSS, and D-P
  • Compatible with four standards of ISO, DIN, ANSI and JIS
  • 128 × 64 dot matrix LCD displays all parameters and graphs
  • ARM processor chip is used to control and process data
  • Built-in lithium-ion chargeable battery and control circuit
  • Design of mechanical is adopted to achieve small bulk
  • Built-in Bluetooth module enables drive the printer wirelessly
  • Mini USB interface enables communication with PC
  • Automatic switch off, memory and various prompt instructions
  • Accessories of curved surface sensor


Technical specification

Measuring Range Ra, Rq: 0.005 µm to 16.00 µm Rz, R3z, Ry, Rt, Rp, Rm: 0.02 µm to 160 µm

Sk: 0% to 100%, S Sm: 0.03 in (1 mm), Tp: 0% to 100%

Accuracy <±10%
Fluctuation of Display Value <6%
Testing Range Resolution
Automatic 0.01 um to 0.04 um
±20 um 0.01 um
±40 um 0.02 um
±80 um 0.04 um
Sensor Radius of Probe Pin 5 µm
Material of Probe Pin Diamond
Measurement Force of Probe 4 mN (0.4 gf)
Probe Angle 90º
Vertical Radius of Guiding Head 1.7 in (45 mm)
Maximum Driving Stroke 0.7 in (17.5 mm)
Cutoff length(l) 0 in (0.25 mm), 0.03 in (0.8 mm), 0.09 in (2.5 mm)
Driving Speed Sampling When Length= (0.25 mm), Vt=0.135 mm/s
When Length= 0.03 in (0.8 mm), Vt=0.5 mm/s
When Length= 0.09 in (2.5 mm), Vt=1 mm/s
Returning Vt=1 mm/s
Standard Accessories Main Unit
Standard Sample Plate
Standard Sensor
Organic Glass Test Support
Power Adapter
Carrying Case
Height Adjustable Supporter
RS 232 C Cable with Software
Operation Manual
Profile Digital Filter RC, PC-RC, GAUSS, D-P
Operating Conditions Temp: 32 °F to 122 °F (0 ºC to 50 ºC) Humidity:<80% RH
Power Supply Bulit-in Rechargeable Li-ion Battery
Dimensions 5.5 in x 2.04 in x 1.88 in (140 mm x 52 mm x 48 mm)
Weight 0.97 lb (440 g)


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