U.S. Department of Defense Test Sets Electron Tube TV-2A/U Benutzerhandbuch
W A R N I N G
D A N G E R O U S V O L T A G E S E X I S T I N T H I S E Q U I P M E N T
Be careful when working on the 290-volt plate and screen supply
circuits, or on the 115-volt ac line connections.
D O N ’ T T A K E C H A N C E S !