Radiological Survey Meter (Geiger Counter) CDV-715 Model 1A F9F Panther This is an original WWII-era

This is an original WWII-era Course and Speed Calculator Mk II as used by aviators of the British RAF in its wooden case

The KB-29P (116 of them) were created starting in 1948 from modified B-29 bombers

The knob rotates the barometric pressure adjustment

and all components may not be present

The temp reading is inaccurate

Radiological Survey Meter (Geiger Counter) CDV-715 Model 1A F9F Panther This is an original WWII-eraHere is an authentic Geiger Counter as used by the US Civil Defense, plus original instructions. Operational condition accuracy is unknown. With a D cell battery installed, the meter needle activates when switched on.