| 摘要 |
The roughness measuring instrument ( 1 ) has a receiving device ( 2 ) for a feeder device ( 3 ), which serves to drag a roughness sensor ( 4 ) over a workpiece surface. The receiving device ( 2 ) carries a testing standard ( 24 ) with a testing face ( 25 ) within range of the roughness sensor ( 4 ). Preferably, the testing standard ( 24 ) is located in a pocket affixed to the receiving device ( 2 ), and this pocket is embodied in the wall of a bore for receiving the feeder device ( 3 ). Its testing face ( 25 ) is thus located inside the receiving device ( 2 ) in a way that is protected against becoming soiled and damaged yet is readily accessible.
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