Landing Gear Position Indicator Panel PB4Y Privateer the navigator observes the travel

the navigator observes the travel of fixed objects across the lens

very early indeed

setting in motion the second hand on the main clock and the minute hand on the stopwatch (both hands are painted deep red and difficult to see in the photos)

model 828 type 19Y1S

FSSC number 88-I-2121

Landing Gear Position Indicator Panel PB4Y Privateer the navigator observes the travelHere is a WWII era Landing Gear Position Indicator Panel. When in use, the red light would illuminate when the gear is up, and the green light illuminates once the gear is down. It included a toggle in the center to test that the bulbs were good. Spare bulbs are contained in the two receptacles below the red and green lights (see photo showing the bulbs removed). The rims of the red and green lights rotate to dim or brighten the lights when