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Bivue fused bifocal lens
OPHTHALMIC LENSES
bifocal lens; box
M. Wiseman & Company Ltd
Europe: United Kingdom, England
1950s
glass; pitch; (box) cardboard
box: 56 mm x 56 mm x 14 mm; stage 1 lens: 50 mm x 54 mm x 10 mm

Fused bifocal lens at a medium stage of manufacture with fused distance and near portions, as yet unground. In original manufacturer's cardboard box, white overprinted in dark brown. Together with a second lens in a more advanced state of manufacture, the near portion ground down and the whole item still bearing grinder's pitch. Together with a third lens, fully ground but unpolished, and a fourth ground round lens bearing the moulded number 6.


2009.471

Gift of Mr Robin Hall FCOptom, 2008



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