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dynameter

[dahy-nam-i-ter]
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noun Optics.

an instrument for determining the magnifying power of telescopes.

Origin of dynameter

First recorded in 1820–30; dyna- + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for dynameter

Historical Examples of dynameter

  • Dynameter, dī-nam′e-tėr, n. an instrument for measuring the magnifying power of a telescope.

  • The ratio of the diameter of the object glass to that of the image as seen in the dynameter gives the power of the instrument.

    Visual Signaling

    Signal Corps United States Army

  • The end of the dynameter next to the eyepiece of the instrument is ruled with a series of lines one-hundredth of an inch apart.

    Visual Signaling

    Signal Corps United States Army

British Dictionary definitions for dynameter

dynameter

noun

an instrument for determining the magnifying power of telescopes
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