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CMT
program
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Micrometers are used to accurately measure sizes up to 1 inch, at least the ones used
here.
The smallest increment of measurement is one ten-thousandth of an inch (0.0001).
Precision is listed as +/- 0.00005 inches.
How to read:
- Start by verifying zero with the jaws closed.
- Turn the ratcheting knob on the end till it clicks.
- If it isn't zero, adjust
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- Carefully open and close the jaws around the specimen using the ratcheting knob till it
clicks.
- Read it!
- First, identify that it's between 3 and 4 (0.3)
- Next, see that it's just past the quarter mark (0.325)
- Also see that the dial reads between 4 and 5, so add 0.004 to the 0.325 = (0.329)
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- To get the ten-thousandths place, read the vernier.
- Look for the line that best aligns with a mark on the dial - in this case 4.
- So add 0.0004 for a final reading of 0.3294
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