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focometer
[ foh-kom-i-ter ]
/ foʊˈkɒm ɪ tər /
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noun Optics.
an instrument for measuring the focal length of a lens or other optical system.
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
British Dictionary definitions for focometer
focometer
/ (fəʊˈkɒmɪtə) /
noun
an instrument for measuring the focal length of a lens
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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