20's Bendix Aviation Corp Pioneer Instrument venturi tube Aircraft Airplane Vtg!

• vintage black metallic item is a Bendix Aviation Corporation Pioneer Instrument Division venturi tube, used historically on aircraft to power vacuum instruments like turn-and-bank indicators. pitot tube
• The device operates on the principle of reducing pressure in a flowing fluid through a constricted section, allowing it to measure or create a vacuum. 
• Similar specimens from this manufacturer date back to the 1920s and were widely used on U.S. military aircraft during the WWII era

selling as pictured

have a bunch of vintage aircraft parts & acc listed!

Selling as pictured 060426 CG