dynameter

[ dahy-nam-i-ter ]
/ daɪˈnæm ɪ tər /
|

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

  • 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

/ (daɪˈnæmɪtə) /

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