TitleWhirlwind stack 4F
Dimensionsoverall: 12 1/4 in x 19 in x 6 3/4 in
DescriptionThe front of the object is a standard 19 inch rack panel. It has 8 rotary selector switches. One switch is labeled "SYNC SELECTOR". Three of the switches are grouped with a "LOWER TRACE" label Another three switches are grouped with an "UPPER TRACE" label. The last switch is unlabled and has no knob. Behind the front panel is a metal box with numerous BNC connectors on the back.
The object was probably used to select signals from the BNC connectors. The signals would be used as the 2 vertical inputs and sync signal for a dual trace oscilloscope.