What are Surface Roughness Comparator plates?

Where it is not possible or conditions do not allow the use of a profilometer, roughness of machined surfaces can usually be assessed conveniently and with sufficient reliability using visual and tactile (fingernail) comparisons with a standard set of surfaces machined in the same way.

This is done using one of our many Roughness Comparison Specimens. They are simple to use, inexpensive, and hence widely used in many different applications.

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