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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
Probability Slide Rule
Perrygraf for Rolatape Corp.
USA
Cardstock
c. 1965
dia. = 16.5 cm
General Purpose Probability
Notes:
Used to make probability calculations
Image 1
Image 2
Image 3
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Image 5
Image 6