The object is two gangs of semi-circular chasses, connected end-to-end. Each chassis is formed out of six metal strips, with each strip containing a single row of six vacuum tube sockets, for a total of 12 strips containing 72 sockets. Four of the strips, or 24 sockets, are not electrically wired into this particular chassis. There are two heavy ground straps emanating from each end. One end also has two bundles of wires terminating in lugs, presumably for power. There is one 14-pin male connector at the end of a wire bundle out of the one side. There are a variety of apparent test points, available as pins on one end and as 1-pin sockets along the center of one side. Printed paper stickers label many of the test points.