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Microscopic lens trial set
TRIAL CASES, FRAMES AND REFRACTOR HEADS
low vision trial case
North America: USA
Mid 20th c.
glass; metal; brass; wood; leather
overall (case): 26 mm x 146 mm x 75 mm; overall (each trial lens): 50 mm x 36 mm
2013.646
TRIAL CASES, FRAMES AND REFRACTOR HEADS
low vision trial case
North America: USA
Mid 20th c.
glass; metal; brass; wood; leather
overall (case): 26 mm x 146 mm x 75 mm; overall (each trial lens): 50 mm x 36 mm
Trial set of three single vision microscopic lenses for low vision patients (X6, X8, X10) with ring diameter to give the best central optics. Each lens mounted in a shiny white metal rim with handle bearing an unrelated lens power. Contained within a compartmentalised black leather-covered wooden hinged case with two yellow metal clasps, lined in red velvet and white silk.
2013.646
The Norman Bier Collection, transfer from City University, 2013