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Optician's rule
MANUFACTURING AND DISPENSING EQUIPMENT
rule
R. Archer & Son
Europe: United Kingdom
Early 20th c.
boxwood
overall: 38 mm x 155 mm

Rule made from boxwood, rectangular, with two bevelled edges. Upper surface features a lens size gauge; the flat reverse featured imperial and metric scales, pupillary distance and nasal height scales.


2024.79

Gift of Mrs Veronica Worrall (Raymond Hill Collection), 2023



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