Presentations text content in Reading the Micrometer
Slide1
Reading the Micrometer
Slide2Objectives
Identify micrometer parts
Determine micrometer reading
Slide3This is a English micrometer
thimble
sleeve
anvil
spindle
frame
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0
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24
22
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For clarity we will use an animated figure.
Slide6Let’s take a close
look at the sleeve of the micrometer.
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0
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0 1 2 3 4 5 6 7 8 9 0
1/10 inch (0.100)
25/1000 inch (0.025)
1/1000 inch (0.001)
One inch (1.000)
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Slide9Now, an example...
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0 1 2 3
Smallest Measurement
0.000
Largest sleeve reading
0.300
Now, an example...
One mark past
largest sleeve
reading
0.025
Thimble Reading
0.016
0.341 inches
Slide11A digital micrometer
Slide12Another example...
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0 1 2 3 4
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0
Smallest Measurement
Largest sleeve reading
Three marks past largest sleeve reading
Thimble Reading
3.000
0.400
0.075
0.021
3.496 inches
Another example...
Slide14Review...
Lightly tighten on object.
Determine smallest measurement when micrometer is closed.
Find largest visible number on sleeve and multiply times 0.100.
Slide15Review...
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.
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Reading the Micrometer
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