Mahr 6820420 PRN 10 Roughness Standard by Mahr ID#: 6820420-MHR |MFGID: 6820420 Your Price: $952.63 Quantity discounts available QuantityPrice Mahr Depot Item. Usually ships in 1-2 Business Days. Return Policy Qty -+ Add to Cart Request Info Questions?CallCall Us864.433.9771|Mon-Fri 8-5 EST Share Print Product Info Product Information Description Mahr 6820420 PRN 10 Roughness Standard is chromed with a turned profile. The profile depth is approximately 10um- .394". Used for checking the roughness measuring station. Specifications Info and GuidesProduct Data Sheet