Archive
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Collections
Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Slide Adder
Five Slide Adders
Various
USA and Germany
Metal
Unknown
N/A
Adding and Subtracting
Notes:
"Here are five old slide adders. Four of them are the “Baby Calculator”, and one is an 8-column Produx. The four Baby Calculators show three different evolutions of that adder. "
Image 1
Image 2
Image 3
Image 4
Image 5
Image 6
Image 7
Image 8
Image 9
Image 10
Image 11
