An item consisting of two or more calculators of circular slide rule type, designed to provide data concerning a nuclear cloud (fireball), as observed from the ground, and also to provide data to facilitate the making of estimates or predictions concerning radioactive fallout hazards.
Classification: Calculating machines except electronic
NSN 6650-01-075-8355
NSN 5965-01-426-8325
NSN 5985-00-136-3478
NSN 6650-01-058-0049
NSN 6320-01-399-6177
NSN 7035-01-145-5059
NSN 2925-00-190-5561
NSN 4140-01-145-8098
NSN 5965-01-367-6483
NSN 6685-01-379-7764
NSN 6150-01-090-0237
NSN 5935-01-437-6524