||Donor's ID number for rule
overall: 1/4 in x 5 7/8 in x 1 1/4 in
The object consists of a slide rule and leather case. Printed on the back of the slide rule is "J.N. MARSHALL PVT. LTD. POONA-411- 18" and the office addresses.
Pre-computer: slide rule
Gift of Mike Konshak