The object consists of a set of panels mounted on a metal frame. From top to bottom, the four panels are as follows: One panel with tube sockets, switches, and dials; two panels with meters, switches, and plug-boards; power supply with switches and fuses. One of the labels on the bottom panel reads "POWER SUPPLY WISC." Other labels include: CHASSIS, FIL. VOLTS, AC ON/OFF, and DC ON/OFF. A bag attached to the object contains several vacuum tubes.