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The GOYOJO Surface Roughness Tester is a portable, high-accuracy gauge offering 0.01μm precision across four key roughness parameters (Ra, Rq, Rz, Rt). Equipped with a high-speed DSP processor, a bright OLED display, and a rechargeable lithium-ion battery, it adapts to diverse surface types and sizes, making it an essential tool for professionals in manufacturing, engineering, aerospace, and more.







S**A
Very Accurate and Reliable Product
I recently used the GOYOJO Surface Roughness Tester while working on a custom woodworking project where getting a smooth finish was crucial. This tester gave me quick precise measurements, so I knew exactly when the surface was at the quality level I needed. It’s easy to use and the portability means I can bring it with me wherever I work. This tool has been great for my projects making it easy to ensure professional quality work every time.
H**
Everything works well!!!
Good and fast delivery, well packaged, the product is completely satisfied and tested, everything works well, I recommend it. Thanks to the seller!
C**R
Good product
It’s incredibly easy to use with an intuitive interface and straightforward setup. The accuracy of measurements is outstanding across different surfaces. Its sturdy build and compact design are perfect for our needs.it has exceeded my expectations in usability and performance. I highly recommend this reliable tester to others.
Trustpilot
3 days ago
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