Printed on a sticker above the connector on the front
overall: 21 in x 17 5/8 in x 16 5/8 in
The object is the plasma display portion of a Plato student terminal deployed at the University of Illinois. The display had an LED-based touch screen capability. It is a metal box with plywood sides. There is a DB-25 connector on the front and two DB-25 connectors on the back. There are three rocker switches also on the front panel below the display.