Types, uses, characteristics, use, maintenance and maintenance of commonly used measuring tools.

Depends on where you use it. Calipers and vernier calipers can measure: outer diameter, inner diameter, depth and step surface! But its tolerance is 0.02mm! Generally used to measure workpieces with low precision requirements! Then micrometer is divided into: inside micrometer and lever micrometer! Outside micrometer, three-point micrometer! The inside micrometer is specially used to measure the inside diameter! The outside micrometer is specially used to measure the outside diameter! The tolerance of these two kinds is 0.00 1mm! Can measure high-precision workpieces! Then the three-point micrometer, that is, the measuring tool with the highest accuracy in measuring the inner diameter, has an accuracy of 0.0001mm. Dial indicator: generally used in conjunction with other measuring tools, such as the inner diameter measuring rod! The accuracy is 0.0 1mm! The dial indicator is the same as the dial indicator! The accuracy is 0.00 1mm!