Civil Defense CD V-717 Radiological Survey Meter Civil Defense Department instrument issued for civilian use during and after nuclear attack or reactor meltdown. Handheld unit designed to be used by persons entering a suspected contaminated area, so they are informed about the level of radiation in that location. This model was made to detect HIGH levels of Gamma radiation ONLY. For display or parts use. No guarantee of any type of accurate function. Sold as a novelty. Own a piece of history. 6 Selector Switch Settings: Circuit check, Off, Zero (calibrate), X0.1 (0-.5 r/hr, X1 (0-5 r/hr), X10 (0-50 r/hr), X100 (0-500 r/hr). Zero Adjust Knob. Ruggedized, Sealed meter is watertight, and resists shock and vibration damage. The 717 features a 25 ft. extension cable wound and stored in the lower housing of the unit. Operates on standard D-Cell batteries (not included). Manufactured in the early 60's