Features 1、It is suitable for internal diameter determination, aperture measurement and clearance measurement, for diameters of small holes, slots etc 2、Accurate figures and increments are etched into surface, easy to read 3、Polished, bright and clean without burr, rust laser engraved line and will not rub off 4、The structure is simple and reasonable, easy to measure. Place the gauge on clearance or aperture, and read the measured value 5、Made of stainless steel, miniature and light weight, easy to carry Specification Features: It is suitable for internal diameter determination, aperture measurement and clearance measurement, for diameters of small holes, slots etc. Accurate figures and increments are etched into surface, easy to read. Polished, bright and clean without burr, rust laser engraved line and will not rub off. The structure is simple and reasonable, easy to measure. Place the gauge on clearance or aperture, and read the measured value. Made of stainless steel, miniature and light weight, easy to carry. Specification: Material: stainless steel Measuring range: 1-15 mm, 1/8" - 5/8" Features: front metric system, reverse imperial system Purpose: to measure various clearance dimensions Package included: 1x Wedge feeler Package List