Torpedo Director, Type B-2, WWII, Douglas A-20 A-26 Bombers Liaison Aircraft and the compass ring can

and the compass ring can be rotated to indicate course

and fighters P-38 Lightning and P-61 Black Widow

He used this information to check his rate of descent until the ground came into view and he could make a safe visual landing

The E-1 fire control system used the APG-33 or -40 radar to continuously measure the range

the ring is turned until the two white wires are parallel to the North-South lines on the card

Torpedo Director, Type B-2, WWII, Douglas A-20 A-26 Bombers Liaison Aircraft and the compass ring canThe US Army Air Force Type B 2 Torpedo Director is an optical, illuminated sighting device used on torpedo carrying airplanes, specifically the B 25 Mitchell, the A 20 Havoc, and A 26 Invader, according to their WWII era flight manuals (see images of relevant pages from these manuals in photo gallery). It is mounted on a square bar forward of the pilot or co pilot's station, and is adjustable over the length of the mounting bar. It could be installed