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Policoff bifocal trial set
TRIAL CASES, FRAMES AND REFRACTOR HEADS
low vision trial case
Wilkes Barre
North America: USA, Pennsylvania
c.1960
glass; plastic
overall (case): 31 mm x 146 mm x 96 mm
2013.640
TRIAL CASES, FRAMES AND REFRACTOR HEADS
low vision trial case
Wilkes Barre
North America: USA, Pennsylvania
c.1960
glass; plastic
overall (case): 31 mm x 146 mm x 96 mm
Set of five glass achromatic triplet microscopic bifocal low vision unit trial lenses, X3 to X14. Contained in a compartmentalised ebony case, with hinged white plastic lid and hook clasp.
2013.640
The Norman Bier Collection, transfer from City University, 2013