Index plate

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a graduated circular plate, or one with circular rows of holes differently spaced; used in machines for graduating circles, cutting gear teeth, etc.

See also: Index

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The QD Ambi Sling Mount replaces the factory index plate and enables you to run a single-point and/or two-point sling.
The UCIW (Ultra-Compact Individual Weapon) kit comes with the stock, receiver extension, index plate, recoil spring and castle nut.
Other safety features include an integrated electric position indicator in the mounting flange that visually shows whether the valve is open or closed and an index plate that clearly indicates the angle opening in degrees.
"We inject two parts in the same mould with a double rotary index plate," says general sales manager Olivier Crave.
The 72-position index plate allows hard index every five degrees and there is a built-in sine bar for setting angles between hard index locations.
Concerning cycle times, the application of rotating mold systems (rotary platforms, rotary molds, rotary crosses and index plate molds) would be an advantage.
The input shaft turns a planetary assembly consisting of a planetary plate, index plate, and four epicyclic shafts.