The outside micrometer is also known as external micrometer or side micrometer, used for measuring the outside dimensions of jobs, such as diameter of a bar, rod and thickness of plate, mainly measuring dimensions of small components with great accuracy.
Main components: It is composed of a fixed frame, a frame cover, an anvil, a carbide measuring face, a spindle, a locking device, a sleeve, a thimble, and a measuring force device.
How it works：The outside micrometer works on the principle of spiral motion. When the micrometer cylinder is rotated, the micrometer screw moves precisely to bring the measuring head into contact with the workpiece and measure its dimensions. By reading the scale values on the fixing sleeve and the microcylinder, the dimensions of the workpiece can be calculated.
Feature:
1. High precision: The outside micrometer has a very high measurement accuracy, usually up to 0.01mm or 0.001mm, which can meet the needs of precision measurement.
2. Good stability: The structure of the outside micrometer is reasonably designed, and the key components such as the fixed ruler frame and the micrometer screw have been precision machined and strictly inspected to ensure the stability and reliability of the measurement.
3. Wide application: The outside micrometer can be used to measure workpieces of various shapes and sizes, including cylindrical, conical, spherical, etc.
4. Easy to operate: The use of the outside micrometer is relatively simple, and the measurement is completed by simply contacting the measuring head with the workpiece and reading the scale value. At the same time, it also has auxiliary tools such as force measuring devices and locking devices, which are convenient for users to measure and record.
With the above characteristics, the outer micrometer has been widely used in the field of manufacturing.
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