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30PCS Surface Roughness Standards Set Surface Roughness Comparators for Comparing and Determining The Degree of The Surface Finish with Ra0.05-12.5um Carbon Steel

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Management number 220428177 Release Date 2026/05/03 List Price US$84.00 Model Number 220428177
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  • These Surface Roughness is used to compare and determine the degree of the surface finish by comparision method and eye estimation or magnifying glass.
  • This set contains standards for the six most important maching methods in the prevalent "AA" values. These surface rouhness is used to compare and determine the degree of the surface finish by comparision method and eye estimation or magnifying glass.
  • As standardized in ISO2632/I-1975; Specifications meet S.A.E. and military specifications for visual and tactile inspection.
  • All 30 specimens are calibrated in u" AA(Arithmetical Average) and in the metric eqaivalens um Ra.
  • The surface rough contrast blocks is made of 45 super Carbon Steel except the GCr 15 which is using to plat lapping the sample block.

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