MAHR 2257488 Roughness Standard: One Sided Type 521E Cert w/ 2Um Stylus by Mahr ID#: 2257488-MHR |MFGID: 2257488 Your Price: $531.79 Quantity discounts available QuantityPrice 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 2257488 Roughness Standard: One Sided Type 521E Cert w/ 2Um Stylus