Artifact Details Title Harvard Mark III magnetic head Catalog Number 102682075 Type Physical object Description Object consists of magnetic head with attached shielded cable and plug. Believed to be part of drum memory used on the Harvard Mark III. Pole tip width approx. 3/32". Date 1949 Manufacturer Harvard Computation Laboratory Place Manufactured U.S. Dimensions overall: 1/2 in x 2 in x 2 in Category drum