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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Disk
GTA 8-5-57 Entry-Exit Time after Burst
US Army Training Support Center
USA
Plastic
1955
dia. = 12.6 cm
Radiation Dosage
Notes:
1) Used to calculate safe entry and exit times after an atomic blast 2) Note that his slide rule has 4 concentric disks
Image 1
Image 2
