• synonyms

index plate

noun Machinery.
  1. a plate perforated with rows of different numbers of equally spaced holes as a guide for indexing work.
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Origin of index plate

First recorded in 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for index plate

Historical Examples

  • 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.

    Bureau of Ordnance, USN