At the height of the Cold War, Geiger counters were distributed and kept on hand in public places like civilian fallout shelters, schools, homes and government buildings to detect radiation.
Today, Geiger counters make interesting conversations as well as provide a unique piece of memorabilia for any history buff or military scholar's collection.
Not certain if “The Colorado” can be easily made to function as originally intended. Calibration card verifies unit was put into circulation in 1955.