Brief Description of the Micrometer Reading Method
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To read a micrometer, first read the whole millimeters and half millimeters of the workpiece from the fixed sleeve. Then, read the decimal part of the measurement from the thimble scale where the longitudinal line of the fixed sleeve aligns. The sum of these two readings gives the size of the workpiece. Below is a detailed introduction to micrometers. Brief Meaning: A micrometer, also known as a screw gauge, screw micrometer, or micrometer caliper, is a more precise length measuring tool than a vernier caliper. It can measure lengths accurately up to 0.01mm, with a measurement range of several centimeters. Classification: Micrometers can be categorized into mechanical micrometers, electronic micrometers, vernier reading outside micrometers, small-head outside micrometers, pointed outside micrometers, wall thickness micrometers, sheet thickness micrometers, and micrometers with a micro head to be measured, among others.
Reading a micrometer is actually quite intuitive. I often use it to measure the thickness of parts when repairing my own car. First, clamp the object to be measured between the anvil and spindle of the micrometer, then slowly apply pressure using the ratchet knob until you feel resistance. At this point, look at the scale on the main ruler, which usually shows the integer part in millimeters, such as 12 mm. Then, look at the numbers on the thimble scale, where each division represents 0.01 mm, and align it with the reference line to read. Finally, add the two values together to get the total reading. For example, if the main scale reads 12 and the thimble reads 0.25, the total is 12.25 mm. The key is to ensure good lighting to avoid eye strain and misreading. With some practice, measurement accuracy can be greatly improved, which is particularly useful for checking brake pad wear or piston clearance.
