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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
Simple Interest Rate Calculator
Unknown / design J.B. Maillie
USA
Plastic
c. 1966
Dia. = 8.9 cm
Finance
Notes:
"Used for simple interest rate calculations, payments, interest rate, loan amount etc."
Image 1
Image 2
