Carbide Tipped Contact Knife Edge Point for 4-48UNF Mitutoyos philosophy at that time was to make the best mechanical micrometer in the world. This philosophy was expanded in the next several decades to include a wider product offering focused on mechanical dimensional gaging products. Mitutoyo focused its R&D and production efforts on creating the most advanced micrometers calipers indicators and other measurement tools in the world.Features Knife Edge Point Suitable for measuring narrow groove diameter - SKU: QLLR2251