Focimeter
Zell's Condensed Dictionary · 1879 · p. 20
(-sim'e-tur.) [From L. focus, andGr. metron, measure. ] (Photog.) An instrument by which a photographer is enabled to ascertain the focus of the photogenic rays. [s. 372]
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The American Dictionary and Cyclopedia (1910)
The American Dictionary and Cyclopedia (1910)
The Optical Dictionary (1904)
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