Artifact Details Title 1301 disk file head Catalog Number 102715954 Type Physical object Description part of 1301 disk file unit. 24 disks, 40 heads, 21.6 mbyte, 165 ms access, 1800 rpm, 520 bits/inch, 50 track/inch, 250 u-inch fly height, 620 u-inch media thickness, 700 u-inch head gap. Manufacturer IBM Corporation Place Manufactured U.S. Dimensions overall: 1 1/2 in x 6 in x 1 1/2 in Category Memory/disk Credit Gift of G. Fred Grometer Lot Number X5500.2010