The IPC-1 for multiple Navigation and Instrument Flying calculations. A circular 115mm diameter calculator. Circular Slide Rule side is that of the CRP-1 without a cursor. For calculation and conversion of Temperature, Time, Distance Volume, Altitude and Density Altitude, Speed, Weight, Fuel, Multiplication and Division, 1 in ...

These Instrument Flying Spectacles are partially opaqued spectacles designed to be worn during instrument flying practice to restrict upward and lateral visibility when the aircraft had not been fitted with blind flying screens. Foldable and easily carried in the pocket or flight case. Supplied in a slip case. ...