Printed on a white label near a BNC connector in the middle of the board.
Located on a white sticker on the bottom right at the back of the unit.
Found on a tag attached to one of the BNC connectors.
Printed on the top left corner in white.
overall: 8 1/2 in x 26 in x 11 1/2 in
The object is a metal rack standing on built-in legs. The rack contains 6 vacuum tubes sockets (three tubes are still attached). Besides the tubes, the rack has 12 BNC connectors and a male power connector. There are wire cables attached to six of the BNC connectors.