F 84 F Ground Performance Computer

The F 84 Ground Performance Computer is designed for computing Take Off and Landing data,the upper circular and vertical scales on the front face of the computer enable comtutation of the Ground Roll Distance required for Take – Off under existing conditions of Aircraft Gross Weight,Runway Temperature and Pressure Altitude,Computer was used by German F 84 F Pilots in the 50th. and 60th.,unused condition,very rare,