Machinery. a flat plate used by machinists for testing surfaces that are to be made perfectly flat.
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- surface mail,
- surface noise,
- surface of light and shade,
- surface of projection,
- surface of revolution,
- surface road,
- surface structure,
- surface tension,
- surface wave,
Origin of surface plate
First recorded in 1840–50
Also called planometer.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
another name for faceplate (def. 2)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012