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    Surface Roughness Tester, 0.005-15μm

    Cost-effective surface roughness tester with a series of functions including automatic switch-off, memory storage, and Bluetooth printing, ensuring accurate and consistent readings every time you use it. The pocket surface roughness tester features a measurement range of 0.005-15µm and uses a DSP chip for control and data processing to accurately and reliably measure roughness parameters such as Ra, Rz and Rt.
    SKU: ATO-SRT-8100
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    The digital surface roughness tester has a compact and portable design that can be taken anywhere in the workplace. Surface finish tester has a built-in 3000mAh lithium-ion rechargeable battery and control circuitry, and supports Bluetooth printing and wireless mobile app operation.The rugged construction of the Pocket roughness tester ensures that it can withstand the toughest working conditions, making it a reliable and long-lasting investment.


    Model ATO-SRT-8100
    Parameters Ra, Rz, Rq, Rt
    Measuring Range Ra: 0.005-15μm
    Display Range Ra, Rq: 0.05-15.0um, Rz, Rt: 0.1-50μm
    Error Correction Range One-click measurement correction
    Resolution 0.01μm
    Filter /
    Sampling Length 0.25mm, 0.8mm, 2.5mm
    Evaluation Length 5L 
    Drive Stroke 1.25-17.5mm
    Measurement Error ≤±10%
    Variability <6%
    Support for Workpieces Surface roughness testing machine, curved surface, other special workpieces
    Display Method LCD
    Power Supply Rechargeable lithium battery
    Standard Accessories Host, standard sample plate, test pad, power adapter
    Accessories Available Fine axis jig
    Dimensions 106x70x20mm
    Weight 200g


    • The digital surface roughness tester housing is designed with a drawn aluminium mould for durability and resistance to electromagnetic interference.
    • High-speed DSP processor is used for data processing and calculation, which greatly improves the measurement and calculation speed.
    • The LCD display features an OLED color display and is suitable for all occasions.
    • The surface roughness tester uses a lithium-ion rechargeable battery, which can work for a long time and has a short charging time, making it suitable for field use.
    • The pocket surface roughness tester can be charged using a dedicated charger or USB port on a PC, which is convenient and fast.
    • Real-time monitoring and display of lithium-ion battery power and reminding the user to charge with charging progress indication.
    • The digital surface finish tester can detect external circles, flat surfaces, tapered surfaces and also grooves larger than 80*30mm.

    Dimension (Unit: mm)

    Pocket surface roughness tester dimension


    Surface roughness testers are commonly used in a variety of industries to measure the roughness of surfaces. ATO portable surface roughness tester has applications in the manufacturing, automotive, aerospace and medical industries, among others.

    Surface roughness tester applications

    Tips: What are the types of surface roughness test?

    There are several types of surface roughness tests that can be used to measure the roughness of a surface. Here are some common types:

    • Contact Profilometers: These instruments use a diamond-tipped stylus to make contact with the surface and measure the roughness parameters.
    • Optical Profilometers: These instruments use light to scan the surface and create a 3D image of the surface, from which the roughness parameters can be calculated.
    • Atomic Force Microscopy (AFM): This technique uses a small probe to scan the surface and measure the height variations at the nanoscale.
    • White Light Interferometry (WLI): This technique measures the height variations of the surface by using the interference patterns of light.
    • Laser Scanning Confocal Microscopy (LSCM): This technique uses a laser to scan the surface and create a 3D image of the surface, from which the roughness parameters can be calculated.
    • Fringe Projection: This technique projects a fringe pattern onto the surface and measures the surface height variations by analyzing the pattern.

    Each of these techniques has its advantages and disadvantages and may be better suited for different applications depending on the required accuracy, resolution, and speed of measurement.

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