output-meter adapter

output-meter adapter

[′au̇t‚pu̇t ‚mēd·ər ə‚dap·tər]
(engineering)
Device that can be slipped over the plate prong of the output tube of a radio receiver to provide a conventional terminal to which an output meter can be connected during alignment.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.