This is a generic module rack with ten modules installed. Most modules have two tubes, but one of the modules has a subminiature tube and is missing its second tube. The cooaxial connectors are numbered J1-1 through J10-4. At one end there are two terminal strips.
Date
1951
Identifying Numbers
Other number
478
Handwritten in black grease pencil on the bottom of the frame,
Serial number
47
Stamped in white on the frame. The number is partially obscured by a module.
