GAOTek Surface Roughness Tester

GAOTek surface roughness tester is a high accuracy instrument for measuring surface roughness.




GAOTek surface roughness tester is a high accuracy instrument for measuring surface roughness. It can be used on variety of machining parts and operates on various surfaces, not only flat but also outer cone, outer cylinder, curved, pinholes, grooves, recesses grooves and axle etc.



  • Mechatronics and ergonomics design, small size, light weight, easy to operation
  • 5 inches color graphic LCD touch screen, WYSIWYG, it includes a backlight for visibility in dark environments
  • The LG-310 can be operated using the buttons or the touch screen
  • Measurement ranges up to 320μm
  • Large internal memory: 100item of raw data and curves can be stored
  • The LG-310 provides Bluetooth Capability, support wireless connection with mobile and mini printer
  • Built-in lithium-ion rechargeable battery and controlling circuit, high capacity, no memory effect
  • There is remaining charge indicator, charging hint
  • It works over 50 hours while fully charged.
  • Language: Chinese and English
  • DSP chip control and data processing, high speed, low power consumption
  • Real-time clock setting and display for easy data recording and storage
  • With auto sleep, auto power off, power-saving features
  • Reliable circuit and software design to preventing the motor stuck
  • All parameters or any of the parameters which set by users can be printed


Technical Specifications

Measuring rang The Z axis (vertical) 320 µm (-160 µm to 160 µm), 12600 μin (-6300 μin to +6300 μin)
Measuring rang The X axis (Transverse) 0.69 in (17.5mm)
Resolution the Z axis (vertical) 0.002 μm/±20 μm, 0.004 μm/±40 μm0.008 μm/±80 μm, 0.02 μm/±160 μm
Graphic load curve, Roughness profile, filtered curve
Filter RC, PC-RC, Gauss, D-P
The sampling length(lr) 0.009 in (0.25 mm), 0.03 in (0.8 mm), 0.09 in (2.5 mm)
Sensor Measuring principle Inductance
Sensor Stylus tip Diamond, 90 cone angle, 5μmR
Sensor Force Measuring force<4 mN, Skid force<400mN
Sensor Probe head hard alloy, skid radius of curvature: 1.57 in (40 mm)
Sensor Traversing speed lr=0.25, Vt=0.135 mm/s           lr=0.8, Vt=0. 5 mm/s lr=2. 5, Vt=1 mm/s              Return      Vt=1 mm/s
Assessment length (ln) Ln= lr×n    n=1 to 5
Precision 0.001 μm
Tolerance not more than ±10%
Power supply Built-in Lithium-ion battery 3200 mAh, Charger: DC 5 V
Zoom of height adapter 1.57 in (40mm)
Working Environment Temperature:  -4 °F to 104 °F (- 20 ℃ to 40 ℃)Humidity: < 90% RH
Store and Transportation Temperature: -40 °F to 140 °F (- 40 ℃ to 60 ℃)Humidity: < 90% RH
Standards ISO4287, ANSI B46.1, DIN4768, JIS B601
Optional accessory Magnetic Base, height gauge adapter, curved sensor, small hole sensor, deep groove sensor, pinhole sensor, Extending Rod, Right Angle Rod, mini printer, 200mm platform, 300mm marble platform, software, mobile APP
Outline dimension Main unit: 6.22 in × 2.16 in × 2.04 in (158 mm x 55 mm x 52 mm)   drive unit: 0.90 in × 1.06 in × 4.52 in (23 mm x 27 mm x 115 mm)
Weight (main unit) 0.83 lb (380 g)


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