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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
Rand [Nuclear] Probability
Perrygraf for Rand Corporation
USA
Plastic
c. 1961
Dia. = 15.3 cm
Military
Notes:
1) A disk slide rule used to calculate the probability of hitting a specific target and the number of bombs needed to guarantee a specific probability. 2) Slide rule has 2 concentric disks and a clear cursor 3) A US Ait Force Project
Image 1
Image 2