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'Kirslide' Universal Rule
MANUFACTURING AND DISPENSING EQUIPMENT
rule
Kirk Brothers
Europe: United Kingdom, England, London WC1
January 1934
boxwood; metal
overall: 68 mm x 247 mm

Optician's rule. Boxwood, with metal pupillary distance slide gauge to lower section. Scales marked for angle of crest, curl sides and radii, plus on reverse, protractor and bifocal shapes.


2017.331

Transfer from Henfield Museum, 2016



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