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spherometer

[sfi-rom-i-ter] /sfɪˈrɒm ɪ tər/
noun
1.
an instrument for measuring the curvature of spheres and curved surfaces.
Origin of spherometer
1820-1830
1820-30; < French sphéromètre; see sphero-, -meter
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for spherometer
Historical Examples
  • The spherometer is accepted as the sole guide in obtaining the proper curvature.

    On Laboratory Arts Richard Threlfall
  • The glass is ground with emery to the correct spherical figure as given by a spherometer.

    On Laboratory Arts Richard Threlfall
  • It is well to control this process by means of a spherometer, so that the desired radius may be approximately reached.

    On Laboratory Arts Richard Threlfall
  • Before the grade of emery is changed all three surfaces must agree, as nearly, at least, as the spherometer will show.

    On Laboratory Arts Richard Threlfall
  • The squares of glass are cemented to the roughing tool, and this is ground to the spherometer by means of the counterpart tool.

    On Laboratory Arts Richard Threlfall
  • The spherometer is accepted at all stages of the process as the final arbiter as to curvature.

    On Laboratory Arts Richard Threlfall
British Dictionary definitions for spherometer

spherometer

/sfɪəˈrɒmɪtə/
noun
1.
an instrument for measuring the curvature of a surface
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
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