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Optical and Geometrical Insetting Chart
ARCHIVAL ITEMS
selection chart
Europe: United Kingdom, England, London
mid 20th c.
cardboard
overall: 244 x 362 mm

Calculation and selection chart relating to solid bifocal lenses. Handwritten in black and red ink on artist's water colour board. Includes chart for determining position of Near Optical Centre and a key explaining the symbols used.


2002.313

Arthur Bennett Archive



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