Mitutoyo 369-351 Digital Disk Micrometer 2/50.8MM. The Disk Micrometer is designed to easily measure root tangent length of spur gears and helical gears. Non-rotating spindle eliminates torque on workpiece. Speedy spindle feed of 10mm/rev.Diameter of measuring disk: 20mm /. With Ratchet Stop for constant force. 00016" for models up to 50mm / 2"; 6Ìm /. 00024" for models over 50mm / 2". Origin-set, Zero-setting, Data hold, Data output, inch/mm conversion (inch/mm models). Alarm: Low voltage, Counting value composition error. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Inspection & Measurement\Micrometers". The seller is "metrologytooling" and is located in this country: US. This item can be shipped to United States.