This specialized slide rule was included in the back of a book "The Effects of Nuclear Weapons," to illustrate to specialists and interested lay members of the public what kind of destruction could be expected from the detonation of a hydrogen bomb. The book, with its accompanying slide rule, was widely distributed to libraries inthe U.S. The information contained in them was not classified.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.