The object is a rack holding six vacuum tube modules. Each module has sockets for two vacuum tubes. The object also has 22 BNC connectors and five terminal strips. Two of the vacuum tube modules contain smaller vacuum tubes, type 5965. There are three indicator light assembles attached to the object each has one white light and one red light.
Date
1951
Identifying Numbers
Other number
405
"PIUMP" number located on the back of the unit on a black label attached with glue.
Other number
E5-E
Located on the back of the unit on a black label attached with glue.
Serial number
405
Stamped in white on the top of one of the brackets
