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Orthops Slide Rule
MANUFACTURING AND DISPENSING EQUIPMENT
slide rule
Europe: United Kingdom
Mid 20th c.
wood; metal
overall: 80 mm x 179 mm x 5 mm

Box wood dispensing rule with metal slide. Includes apical radii curves and a projection scale. Owner's name inscribed.


2015.110

Gift of Mr and Mrs Peter and Lorna Wilson, 2015



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2015.110.jpg

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