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Shop Grainger for an easy to use surface tester that evaluates 39 surface parameters. Detector with detachable drive unit evaluates 24 surface parameters and features a memory capacity for 15 profiles. Testers feature automatic cut-off selection and code protected settings and include an integrated roughness standard. Use them horizontally or vertically. Surface roughness gages fit in your pocket and provide LCD readout in fractions of inches or micrometers. These pocket surface testers operate horizontally, vertically or upside down. They measure four parameters and feature four switchable positions. When you need a surface tester, shop the selection at Grainger first!