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Locomotion
National Railway Museum
National Science and Media Museum
Science and Industry Museum
Science and Innovation Park
Science Museum
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About
Collection
Learning
The group
Visit us
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Locomotion
National Railway Museum
National Science and Media Museum
Science and Industry Museum
Science and Innovation Park
Science Museum
John Fry
occupation:
Mathematical instrument maker
Nationality:
English
252 Old Bailey, London
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Three-foot folding rule with logarithmic slide
