Keuffel & Esser Company
||Donor's ID number for rule
in case: 3/4 in x 13 in x 2 1/4 in
The object consists of a slide rule and a green leather case. Handwritten inside the flap to the case is "CCJ" and "Johnson Charles". On the outside of the case is written "C-C-J".
Pre-computer: slide rule
Gift of Mike Konshak