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Glass Lens Size Calculator 4th English Edition
MANUFACTURING AND DISPENSING EQUIPMENT
lens measure
Norville Optical Co Ltd; Smith (Calculators) Ltd
Europe: United Kingdom, England, Gloucestershire, Gloucester; Europe: United Kingdom, England, Devon, Beaminster
1975
plastic
overall: 291 mm

Measuring calculator consisting of a flat revolving grey disc with viewing segment, mounted over a white board. Printed in black.


2001.325

Gift from E.G. Lambe (Opticians), 2001



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2001.325b.jpg

2001.325.jpg

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