The Micrometer - 5: Frame
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WARNING: Machine tools present a safety hazard. Improper operation can result in severe injury. These topics are for non-laboratory study only and are not to be used in conjunction with the operation of any tool or machine described herein. Never use a machine tool without the supervision of a qualified instructor.
It is best to discuss the frame as assembly of different parts.

The anvil is permanently press fit into the frame.

The lock is assembled into the frame.

The Barrel and barrel nut are permanently assembled together and then fitted to the frame.

The spindle assembly can now be assembled (threaded) into the frame assembly and the resulting product is a micometer.

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label: micrometer, history, anvil, thimble, spindle, frame, barrel, ratchet, adjustment, holding, handling, reading, vernier