Starrett 690M-3Z dial indicator hole gage with 3.3 to 5.85 mm measuring range and 0.02 mm graduations. Hardened tool steel construction with yellow 2-19/64 in diameter dial. Overall length 7-7/64 in. Designed for precise hole diameter measurement in machining and inspection applications.

These hole gages will check hole diameters to .001" and 0.02mm. They are fast, accurate, easy to read and have a balanced design for easy one hand operation. The gage can be pressed down on a flat surface and checked so the size should read the same as the set number stamped on the back of the indicator. It can also be checked and set with an optional setting master. 3.30mm-5.85mm Range with Case.

Features

• All ground surfaces are of hardened tool steel
• Indicators are AGD design
• Fast, accurate and easy to read
• Balanced design for easy one-hand operation
• Can be checked and set with an optional setting master
• Gage can be pressed down on a flat surface and checked so the size should read the same as the set number stamped on the back of the indicator
• Holes that need to be accurately checked must have no chamfers or countersinks
• These hole gages will check hole diameters to 0.001 in and 0.02 mm