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'Transitions' photochromic lens demonstrator
MANUFACTURING AND DISPENSING EQUIPMENT
lens demonstrator
Transitions Optical UK
Europe: United Kingdom
Early 21st c.
plastic
overall: 222 mm x 83 mm

Demonstration set comprising three lenses contained within grey plastic unit with three rectangular apertures: clearest, darkest and fastest. Together with a magic changing picture showing a man's spectacle lens darkening.


2010.424

Gift of Mr John Dixon Salt FCOptom, 2010



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2010.424.jpg

2010.424b.jpg

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