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'Watford' toric sphero-cylindrical lens and envelope
OPHTHALMIC LENSES
lens
British American Optical Co Ltd
Europe: United Kingdom, England
20th c.
glass; paper
lens: 50 mm; envelope: 57 x 57 mm

Square-shape lens, with rounded corners. Plastic (?). Contained in blue paper envelope, printed in white and black.


1999.5802

Gift of Mr Philip Freeman, FCOptom, 1999


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two plano concave spherical lenses and a 'Watford' toric sphero-cylindrical lens envelope
British American Optical Company Ltd
20th c.
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