Embossed on a metal plate attached to the metal bracket
Etched on the metal bracket
overall: 3 1/2 in x 15 in x 12 in
The object is one of a pair of drum read-write head assemblies from the Harvard Mark II or Mark III. Attached to the metal bracket are 24 read-write heads in two rows of 12 each. Also attached to the bracket is a male connector with 24 pins. All of the read-write heads are labeled HARVARD COMPUTATION LABORATORY.