Suitable for diameter measurement, aperture measurement, clearance measurement, small holes and slots The structure is simple and reasonable and easy to measure. Place the gauge on the clearance or aperture to read the measurement Precise numbers and increments are etched on the surface for easy reading Made of stainless steel, miniature light weight, easy to carry Polished, Bright and Clean, No Burr, Rust Stamped, No Rubbing, Manufacturer: Fcnjsao