Micrometer screw gauges/ Micrometer


It consists of a spindle which is a very accurately machined screw and the object to be measured is placed between the spindle and the anvil, the spindle is moved by turning the ratchet knob or thimble until the object to be measured is lightly touched by both the spindle and the anvil. micrometer screw gauge is used to measure even smaller dimensions than the vernier callipers.


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