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'Optical Light' optician's rule
MANUFACTURING AND DISPENSING EQUIPMENT
rule
New Trend
1990s?
plastic
overall: 162 mm
2012.314
MANUFACTURING AND DISPENSING EQUIPMENT
rule
New Trend
1990s?
plastic
overall: 162 mm
Optician's rule. White plastic overprinted in black, with millimetre scale on upper edge of one face, pupillary gauge and angle gauge on the reverse.
2012.314
Gift of Glasgow Caledonian University, 2012