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Lens Size Calculator
MANUFACTURING AND DISPENSING EQUIPMENT
lens measure
Norville Optical Co Ltd; Smith (Calculators) Ltd
Europe: United Kingdom, England, Gloucestershire, Gloucester
1975
plastic
overall: 295 mm
2001.324
MANUFACTURING AND DISPENSING EQUIPMENT
lens measure
Norville Optical Co Ltd; Smith (Calculators) Ltd
Europe: United Kingdom, England, Gloucestershire, Gloucester
1975
plastic
overall: 295 mm
Measuring calculator consisting of a flat revolving red disc with viewing segment, mounted over a white board. Printed in black.
2001.324
Gift from E.G. Lambe (Opticians), 2001