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 6220-01-128-0087
NSN 6135-01-052-9634
NSN 2925-00-953-2920
NSN 5965-01-209-2838
NSN 6620-01-120-7434
NSN 5945-01-369-5550
NSN 6145-01-545-5263
NSN 6240-01-576-9580
NSN 5915-00-501-2170
NSN 6105-00-824-1608
NSN 5998-01-592-9061
NSN 6620-00-058-1533