Definitions
from The Century Dictionary.
- noun A disk in a gear-cutter, milling-machine, or dividing-engine, having holes in its face to aid in dividing a gear-wheel or other piece into aliquot parts of a circumference and securing the desired number of teeth on the periphery; a divisionplate.
Etymologies
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Examples
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This fuze is opened at the required number of seconds, by cutting close to the right of the mark on the index-plate.
Ordnance Instructions for the United States Navy. 1866. Fourth edition. United States. Navy Dept. Bureau of Ordnance
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