Aircraft Instruments by Emanuel Stieri 1943 C-121 and displays fuel quantity on

and displays fuel quantity on the refueling panel at the flight engineers station (see photo of the panel and location of the indicator from the KB-29P Flight Manual dated 1951)

Above the center axis is a window to display barometric pressure in millibar

including bomber B-52 Stratofortress

This one has a serial number showing a year of manufacture of 1944

Aircraft Instruments by Emanuel Stieri 1943 C-121 and displays fuel quantity onHere is a hardback bound pocket reference for Aircraft Instruments by Emanuel Stieri published in 1943. With over 200 black and white illustrations, Stieri discusses most of the instruments used in aircraft of that era, including tachometers, airspeed indicators, gyro horizons, compasses, drift meters, quantity and temperature indicators, and more. The author describes the instruments, how they function, and the most common servicing procedures.