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How to Read a Micrometer Explained 🔧

A micrometer is a precision measuring instrument used to measure small dimensions accurately — such as the thickness or diameter of an object — up to one-thousandth of a millimeter. It’s a must-have tool in mechanical, engineering, and machining work.

👉 Main Parts of a Micrometer:

Frame: Holds all parts together.

Anvil and Spindle: The object to be measured is placed between them.

Sleeve: Has the main scale readings.

Thimble: Contains circular markings for precise measurement.

Ratchet Stop: Ensures uniform pressure while measuring.

👉 How to Read a Micrometer:

Read the main scale on the sleeve — it gives the millimeters and half-millimeters.

Read the thimble scale — note the line that matches with the sleeve line.

Add both readings to get the final measurement.

💡 Example:
If the main scale reads 5.5 mm and the thimble reads 0.28 mm,
then Total Reading = 5.5 + 0.28 = 5.78 mm

✅ Tips:

Always clean the micrometer and object before measuring.

Avoid overtightening the ratchet.

Calibrate regularly for accurate results.

The micrometer is the key to achieving precision and perfection in mechanical measurements!

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