Transcript Reading the Micrometer - CTE-Auto

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Reading the Micrometer
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Know the names of the different parts of the Micrometer.
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The sleeve goes from 0 to 0. The last 0 could have a
10 there. It represents a movement of 1 inch (1.000)
Each large number is equal to .100. 1= .100, 2= .200,
5= .500 etc. The Lines in between the numbers
represent .025 thousands of and you would count
them up .025, .050, .075, .100
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The Thimble on the side of the sleeve moves as you
rotate it. Each mark is = to .001. Each time it moves
one full turn it travels a distance of .025.
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To read you must take each section and add it together
for example,
The last large Number is 5 so we have .500
we have one line past the 5 so we have .025
and the thimble is turned to the 7 so we have .007
add it together and we have .532
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The last large Number is 2 so we have .200
we have three lines past the 2 so we have .075
and the thimble is turned to the 18 so we have .018
add it together and we have .293
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Some times the thimble is part way in between the two
numbers. Now you will have to carry it out to a 4th digit
that is ten thousands of an inch. Write down the answer
to this problem add a .0005 to it because it is halfway in
between the 12 and 13. Answer at the end of the show.
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Try problem # 2
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1. .6875
2. .625
Don’t forget the decimal
The End