Mitutoyo Dial Test indicator 0.8mm x 0.01mm Full Set SW42 2B Blade Length (mm) 152mm TL121 Blade Length (mm) 152mm 3 acoustic emission level comparing it to the woofer one 513 404 10T DIAL TEST INDICATOR METRIC FULL SET Designed to probe surfaces that cannot be reached with a normal dial gauge Useful for both alignment and for measurement purposes Mitutoyo proprietary new design permits smooth pointer operation Flat crystal makes graduations easy to read Strong frame provides excellent rigidity and durability Non magnetic pointer and contact point permit reliable operation even in magnetic environments Clear and concise wide dial face allows excellent visibility The surface of the crystal is hard coated for excellent scratch resistance O ring protection guarding against oil and water penetration