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The British Refracting Unit
TRIAL CASES, FRAMES AND REFRACTOR HEADS
refractor head; refacting unit
Ellis Optical Co
Europe: United Kingdom, England, Surrey, Croydon
c.1930
metal

Black metal instrument with multiple lens settings and maddox rods. Stem for suspension arm mounting.


1999.4074

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thumbnail The British Refracting Unit
Ellis Optical Co
c.1933
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