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New Adjustable Face Measuring Rule
MANUFACTURING AND DISPENSING EQUIPMENT
face rule; frame rule
Elliott Optical Co Ltd
Europe: United Kingdom, England, London EC1
c.1925
ivorine
overall: 50 mm x 173 mm

Ivorine rule. Scales in dark blue on both sides. One surface for taking facial measurements, including six Optical Society spreads. The other surface for taking frame measurements including a fixed scale, slide and curve for measuring bridge heights.


2017.406

Transfer from Henfield Museum, 2016



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thumbnail Instructions for using the New Adjustable Face Measuring Rule
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thumbnail Optical Society Spread Numbers
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