Boeing 720 / 707 Doppler Navigation Computer Panel
About 1960. This is an example of an early analog navigation computer. Miles to go and course had to be dialed in by the pilots for a leg. Then the miles-to-go dials were rotated back towards Zero electrically in proportion to the ground speed measured by the Doppler Radar. X-track distance was displayed with the LOC/VOR needle on the HSI, a separate instrument (not included).
Original Flugzeuginstrument - Original aircraft instrument
Function not verified, for display use.
1960 - Art.Nr. 2032