Difficulty Level

Tools/Supplies Needed:

• imperial digital mechanical vernier micrometer

Procedure:

• make sure the lock is off so the thimble moves freely
• ensure that the micrometer is correctly zeroed and both measuring faces are clean
• also make sure the part you are measuring is clean too
• open the spindle to ensure it will fit over the item you are measuring, then close the sleeve and anvil against the item using the ratchet
• the ratchet ensured you apply an equal amount of pressure which ensures accuracy
• set the lock to ensure the micrometer does not move
• take the reading from the mechanical digital readout which will give you X.XXX0"
• if you are using a vernier scale or what an accuracy to ten thousandth of an inch, look at the vernier towards the backside of the micrometer on the sleeve
• determine which line on the vernier scale on the sleeve alines best with the lines on the thimble which gives you the final number 0.000X"

Frequently Asked Questions (FAQ):

How do I calibrate the micrometer to zero if it's slightly off?

Using the ratchet to close the spindle closed, and there should be a special C wrench that came with the micrometer. It should clip into the a small hole on the sleeve, then turn accordingly. If you have a larger micrometer such as what I've shown in the video, then use the gauge block and close the spindle with the ratchet. Again same process, using the wrench, adjust the sleeve.