Surface Roughness Comparison Chart


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  • Composite Set of Roughness Specimens
  • This set consists of 30 comparison specimens, covering six commonly-used machining methods (6 turned, 6 end-milled, 6 horizontally milled, 6 surface-ground, 3 lapped, 3 reamed/drilled.
  • A label gives the Ra and Rz values of each specimen in both metric and imperial units.



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