MICROMETER with worksheets

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MICROMETER
The micrometer caliper is used to make very fine measurements.

Rules for reading a micrometer in millimeters:
1. Find the whole number of mm in the measurement by counting the number of mm graduations on the barrel to the left of the head.
2. Find the decimal part of the measurement by reading the graduation on the rotating scale that is most nearly in line with the centerline on the barrel, and multiply this reading by 0.01. If the head is at or immediately to the right of the half mm graduation, add 0.50 mm to the reading on the rotating scale.
3. Estimate one more decimal place.
4. Add the numbers found in steps above.
Example: Read the measurement on the micrometer below.

Steps: 1. the barrel reading is: 8.00 mm
2. The rotating scale reading is: 0.65 mm (Note that the head is
3. The estimate decimal place is: 0.000 mm past the half mark.)
4. The total measurement is: 8.650 mm

Draw the Micrometer and mention its parts

Micrometer reading