Subminiature thyratron? Western Electric?

No marking.

Argon filled.

From the collection of Hallam Evans Mendenhall, who joined the Bell Telephone Laboratories Research Department in 1928, and retired after a 36-year Bell System career.

Any help welcome! • Toute aide est bienvenue ! • Jede Hilfe willkommen!

 

Hauteur • Height • Höhe : 45 mm • 1" 3/4
Diamètre • Diameter • Durchmesser : 12 mm • 1/2"

 

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