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Optician's rule
MANUFACTURING AND DISPENSING EQUIPMENT
rule
Cumberland Optical Company
North America: USA, Tennessee, Nashville
Late 20th c.
wood; plastic
overall: 4 mm x 170 mm x 25 mm

Optician's lens, face and pupillary distance rule. Light birch wood, fully flat rectangular form, with one rounded edge, the other edge with double bevel and supporting ivorine scalesbearing centimetres and inches.


2018.799

Gift of Mr David Shannon MCOptom, 2018



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