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frame rule
MANUFACTURING AND DISPENSING EQUIPMENT
rule
Raphael's Ltd
Europe: United Kingdom, England, London
Early-Mid 20th c.
ivorine
overall: 57 mm x 174 mm x 2 mm

Frame measurer. White ivorine. Bevelled edges. Various imperial and metric scales marked on both sides. Projecting inset/outset scale at one end. Round hole in upper surface, top left corner. Together with an original paper tag bearing handwritten instructions to deduct 1mm from pupillary distance and millimetre scale readings.


2017.345

Transfer from Henfield Museum, 2016



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