Standards Set Allows for Comparison Measurement of Surface Roughness
Paul N. Gardner offers a composite set of standards for comparing surface roughness to give users a realistic idea of the feel, appearance and texture of machined components.
Paul N. Gardner offers a composite set of standards for comparing surface roughness that reflect processes including flat lapping, reaming, grinding, horizontal milling, vertical milling and turning to give users a realistic idea of the feel, appearance and texture of machined components.
According to the company, use of standards specimen scale sets allows user to make quick and easy roughness comparisons, eliminating costly checking methods, saving production time and reducing production of scrap due to poor finishes.
The “economy” set includes 30 specimens made of electroformed solid nickel and measuring 7/8" × 3/8". Markings are in both AA (microinches) and metric (micrometers) Ra designations. The scale conforms to S.A.E. and military specifications for visual and tactile inspection.
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