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reducing glass

a lens or mirror that produces a virtual image of an object smaller than the object itself. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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  • The reducing-glass will help you to get the size and position of things.

    The Painter in Oil Daniel Burleigh Parkhurst
British Dictionary definitions for reducing-glass

reducing glass

a lens or curved mirror that produces an image smaller than the object observed
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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