Reading the Micrometer

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Reading the Micrometer

• By Mark Zidon
• University of Wisconsin-Platteville

Modified by Georgia Agricultural Education
Curriculum Office June 2002
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Objectives

• Identify micrometer parts
• Determine micrometer reading

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This is a English micrometer
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(No Transcript)
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For clarity we will use an animated figure.
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Lets take a close look at the sleeve of the
micrometer.
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15
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Now, an example...
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Now, an example...
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0.000
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0.300
0.025
0.016
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A digital micrometer
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Another example...
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Another example...
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3.000
0.400
0.075
0.021
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Review...

• Lightly tighten on object.
• Determine smallest measurement when micrometer is
  closed.
• Find largest visible number on sleeve and
  multiply times 0.100.

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Review...

• Count number of marks past largest visible number
  on sleeve and multiply times 0.025.
• Multiply thimble reading times 0.001.
• Add all numbers to get answer.