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J. M. Johnston's Measuring Blades
MANUFACTURING AND DISPENSING EQUIPMENT
face rule; frame rule
F. A. Hardy & Co; Whitehead & Hoag Co
North America: USA, Illinois, Chicago; North America: USA, New Jersey, Newark
1925
ivorine
overall (closed): 36 mm x 168 mm
2017.410
MANUFACTURING AND DISPENSING EQUIPMENT
face rule; frame rule
F. A. Hardy & Co; Whitehead & Hoag Co
North America: USA, Illinois, Chicago; North America: USA, New Jersey, Newark
1925
ivorine
overall (closed): 36 mm x 168 mm
Face and frame rule combination instrument, comprising five thin ivorine/celluloid legs pivoting from a single metal fulcrum at one end, three with nose shape apertures, each leg of the rule marked with scales. Includes lens size gauge.
2017.410
Transfer from Henfield Museum, 2016