Starrett 683M-2Z Internal Chamfer Gauge - 0-12.7mm, 0-90 Degree

The Starrett 683M-2Z is a precision internal chamfer gauge designed to directly measure the diameter of chamfered holes without requiring a setting master. Its three-blade plunger system contacts flat surfaces to deliver accurate readings across a 0-12.7mm range at angles from 0 to 90 degrees. The yellow dial with AGD design ensures clear, reliable measurements, whilst hardened tool steel floor surfaces provide durability in demanding industrial environments. The gauge is pre-set and stamped on the back with reference numbers; if wear occurs over time, simple adjustment restores accuracy to the correct reading. This millimetre reading gauge is supplied in a deluxe padded bag for safe storage and transport, making it an essential tool for precision manufacturing, quality control, and deburring verification applications.