Circular slide rule
||Donor's ID number for rule
in box: 1/4 in x 3 1/2 in x 3 5/8 in; overall: 1/4 in x 3 1/4 in x 3 1/8 in
The object consists of a slide rule and carrying case. The slide rule has "Sperry Rand Vickers Hydraulics" printed on the face.
Pre-computer: slide rule
Gift of Mike Konshak