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Locomotion
National Railway Museum
National Science and Media Museum
Science and Industry Museum
Science and Innovation Park
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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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0
Objects
3
Documents
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Image
Has Image
3
Non-Commercial Use
3
Category
Mathematics
3
Maker
Denominator Adding Machine Company
1
Didier Roth
1
Exactus business machines
1
Object type
adding machines
3
Place
Brooklyn
1
England
1
France
1
Material
bone
1
brass (copper, zinc alloy)
1
mahogany (wood)
1
plastic (unidentified)
1
steel (metal)
1
tin (metal)
1
Date
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Exactus adder
1945-1955
Adding Machine
1843
"Denominator" adder for American currency
1920-1930
