This is a compact version of the specialized slide rule included in the reference book "The Effects of Nuclear Weapons," published by the Atomic Energy Commission in 1957 and revised in 1962. The slide rule could be used to compute the relationship among weapon yield, blast radius, damage, and radiation effects. The book and slide rule were widely distributed to libraries in the U.S. Neither the book nor the slide rule was classified.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.