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'Kirface' Rule
MANUFACTURING AND DISPENSING EQUIPMENT
rule
Kirk Brothers
Europe: United Kingdom, England, London WC1
January 1934
ivorine; metal
overall: 68 mm x 244 mm
2017.393
MANUFACTURING AND DISPENSING EQUIPMENT
rule
Kirk Brothers
Europe: United Kingdom, England, London WC1
January 1934
ivorine; metal
overall: 68 mm x 244 mm
Optician's rule. Ivorine, with pupillary distance scale to lower section. Scales also marked for angle of crest, curl sides and radii, plus on reverse, protractor and bifocal shapes.
2017.393
Transfer from Henfield Museum, 2016