Precision measuring tools that can accurately measure the thickness, length, inner diameter, and outer diameter of an object are also called micrometers, micrometers, and micrometers. They are widely used in quality assurance and inspection in processing and production. In addition to the general type, electronic and digital types are often used with fixed bases when you want to measure values quickly and conveniently. You can choose the maximum measurement value (mm) of the measuring range and the resolution (mm).