Mitutoyo Surftest SJ-210 and SJ-310?ÿNosepiece for Cylindrical Surfaces This Nosepiece for Cylindrical Surfaces?ÿwill allow you to use your Mitutoyo Surface Roughness Tester on?ÿround or curved surfaces, allowing you to make surface roughness measurements?ÿmore accurately and more repeatable. Works with the following... Mitutoyo Surftest model SJ-210 Mitutoyo Surftest model SJ-310