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refracting unit / phorometer
TRIAL CASES, FRAMES AND REFRACTOR HEADS
refractor head; refracting unit
American Optical Company
North America: USA
20th c.
metal; glass
1999.309
TRIAL CASES, FRAMES AND REFRACTOR HEADS
refractor head; refracting unit
American Optical Company
North America: USA
20th c.
metal; glass
Phorometer of black metal with white metal headrest. Attachment nozzle. Four sets of adjustable frames including a set of maddox rods, a set of variable prisms and a set of trial lens frames.
1999.309