Aircraft Instruments Technical Instructions, Air Corps Technical School, 1939 C-130 the position of a graduated

the position of a graduated card attached to the float is visible through a glass cover in the front of the bowl

Kollsman FSSC number 88-C-855 was made for aircraft of the US Navy

unscrew the collar (I) and pull the lamp support assembly straight out

but the content pertains to aircraft instruments common in the early 1940's

Aircraft Instruments Technical Instructions, Air Corps Technical School, 1939 C-130 the position of a graduatedHere is a pre WWII era Technical Instruction reference manual for students of the Air Corps Technical School, published in October 1939, for use in training aircraft instrument technicians of the US Army Air Corps. This 258 page, 8. 5 by 11 inch technical manual covers all of the most commonly used instruments used in aircraft of the era, including pressure, temperature, and quantity gauges, compasses, turn, climb, and airspeed indicators, gyro