from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A flat metal plate for gauging the accuracy of a plane surface in precision metalworking. Also called surface plate.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A flat, metal plate used for estimating the flatness of a machined part; a surface plate

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument for gauging or testing a plane surface. See Surface gauge, under surface.

from The Century Dictionary and Cyclopedia

  • n. A plane surface used in machine-making as a gage for plane surfaces; a surface-plate.


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