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How to use anĀ outside micrometer

Shop for Micrometers
Step 1 Hold the object you are measuring in your left hand and the micrometer in your right hand with the frame in your palm. Position the object in between the measuring faces of the micrometer.

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 Rotate the thimble using the ratchet speeder until the object is clamped firmly between the anvil and the spindle. Do not use excessive force; light but firm pressure ensures accurate measurements.

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.

Using ratchet speeder of outside micrometer 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 Secure the spindle by turning the lock nut away from you. Then carefully remove the micrometer from the workpiece and take your reading.

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.

Wonkee Donkee says: 'When taking measurements, try not to touch the measuring faces of the micrometer. Even the smallest amount of oil on your hands can affect the accuracy of your readings.'

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