Picture Tubes
DuMont 30BP4
This tube is the largest black and white tube ever made. It is also the first 90 degree deflection tube made. It was used in the Royal Sovereign, made in 1951.

Attaching the face to the metal funnel
Picture Tubes
This tube is the largest black and white tube ever made. It is also the first 90 degree deflection tube made. It was used in the Royal Sovereign, made in 1951.

Attaching the face to the metal funnel