Teltron Maltese Cross Tube S

Highly evacuated electron tube with divergent electron gun, fluorescent screen and Maltese cross. For demonstrating the straight line propagation of electrons in the absence of any electric or magnetic field by projecting the shadow of a Maltese cross onto the fluorescent screen and for introducing students to electron optics.
Filament voltage: 6.3 V AC
Max. anode voltage: 5000 V
Anode current: approx. 0.1 mA at 4000 V
Glass bulb: approx. 130 mm dia.
Luminescent screen: approx. 85 mm dia.
Total length: approx. 250 mm