How do you use an outside micrometer?

5th March 2020


How to use an outside micrometer


	Shop for Micrometers


		Step 1 – Position object to be measured Hold the object you are measuring in your non-dominant hand and the micrometer in your dominant hand with the frame in your palm. Position the object on the anvil, that is, the fixed measuring face of the micrometer.

		Step 2 – Clamp object between anvil and spindle Rotate the thimble using the ratchet speeder until the spindle is close to the object. Carefully turn the ratchet as you approach the surface to be measured and continue until the spindle stops rotating.

		The ratchet will keep turning, applying the correct amount of force for an accurate measurement. Using the micrometer thimble alone requires a degree of skill and practice to achieve the correct “feel”.

		Step 3 – Read the measurement Read the measurement indicated on the scale. If you need to remove the object (or the micrometer), first secure the spindle by turning the locking device, remove object and then take your reading.