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Phorometer
TRIAL CASES, FRAMES AND REFRACTOR HEADS
refractor head; refracting unit
American Optical Company
North America: USA
1930s
metal; glass
head: 135 x 210 x 100 mm; stand (reduced): 750 x 500 x 480 mm
2003.469
TRIAL CASES, FRAMES AND REFRACTOR HEADS
refractor head; refracting unit
American Optical Company
North America: USA
1930s
metal; glass
head: 135 x 210 x 100 mm; stand (reduced): 750 x 500 x 480 mm
Phorometer of black metal. Four sets of adjustable frames including a set of Maddox rods, a set of variable prisms and a set of trial lens frames. Attachment nozzle for steel horizontal bar. Black crackled enamel-painted tripod stand with three adjustment locks.
2003.469
Ex Keeler Collection