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Micrometer Head to Speed Gaging
A special gage equipped with this Starrett No. 204 Quick Adjusting Micrometer Head greatly increases the speed with which measurements can be taken.
Pressing a button on the thimble allows the spindle to slide along its axis to any position within its range. |  |
Releasing the button re-engages the spindle threads, and thimble rotation is then used for final size adjustment. | | |
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