Each sleeve on a metric Micrometer represents

Sleeve scale Micrometer features are given below.

Explanation:

Measurements taken with micrometer are a combination of the value shown on the sleeve scale and the value indicated on the rotating sleeve scale.  

The value of the first significant figure of a measurement can be found on the sleeve scale. This will be the number immediately to the left of the thimble. On a metric micrometer, this will be given in millimetres. Each minor increment on the sleeve scale represents 0.5mm. In this example, the reading on the sleeve scale is 6.5mm. Each number on the sleeve of the micrometer represents 5 millimeters (mm) or 0.005 meter (m). Each of the 10 equal spaces between each number, with index lines alternating above and below the horizontal line, represents 0.5mm or five-tenths of a mm.. One revolution of the thimble changes the reading one space on the sleeve scale or 0.5 mm. The beveled edge of the thimble is divided into 50 equal divisions with every fifth line numbered: 0, 5, 10,5. Since one complete revolution of the thimble advances the spindle 0.5mm, each graduation on the thimble is equal to one hundredth of a millimeter. As with the inch-graduated micrometer, the three separate readings are added together to obtain the total reading.

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