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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. 2015.
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Examples from the Web for spherometer
Historical Examples
  • 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
  • The spherometer is accepted as the sole guide in obtaining the proper curvature.

    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 spherometer is accepted at all stages of the process as the final arbiter as to curvature.

    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
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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