Features multi, Parameter measurement of ra, Rq, Rz and rt. Backlit lcd display with indication for proper probe alignment. Data storage and recall. Metric/imperial conversion. Compact and low volume structure for convenient storage. Applications roughness plays a crucial role in parameter when trying to discover whether a surface iperfect for a certain purpose. Rough surfaces often wear out more quickly than smoother surfaces. Rougher surfaces are normally more vulnerable shielded from oxidation but they, And cracks additionally serve as able to aid in adhesion. A roughness tester is tailored to the rapid and precise assessment of a material's surface texture or roughness few industries include automobile manufacturing and spare metal processing, Parts processing machinery parts, Equipment and surface engineering, Processing accessories treatment, Mold casting and precision manufacturing. Measuring principle this instrument has a sensor tip, Using inductance type principle for measuring roughness. It is traversed over the sample, Using a motor assembly, And its roughness will cause the sensor to be displaced. This displacement causes inductance of the sensor inductor to change and produces an analog signal proportional to the surface roughness.