The record contains a ten module vacuum tube rack with seven modules installed. There are forty BNC connectors labeled J1-1 through J10-4. There are two power terminal blocks on the right side.
Date
1951
Manufacturer
Massachusetts Institute of Technology (MIT)
Identifying Numbers
Other number
L4-L
Engraved on a plastic plate
Serial number
479
Stamped in white on the top of the rack and handwritten in black marker on the underside of the rack.