Standard
AIR SPEED TUBES ELECTRICALLY HEATED
1947-12-01
HISTORICAL
AS393
This specification covers the following basic types: Type I - Pitot Pressure, Straight and L-shaped, 12 and 24 volt nominal, 2 wire circuit. Type II - Pitot and Static Pressures, Straight and L-shaped 12 and 24 volt nominal, 2 wire circuit.