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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
2017.331
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