Artifact Details Title Slide rule Catalog Number 102631771 Type Physical object Description 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". Manufacturer Keuffel & Esser Company Place Manufactured U.S. Identifying Numbers Model number 4081-3 Other number S006 Donor's ID number for rule Serial number 433406 Dimensions in case: 3/4 in x 13 in x 2 1/4 in Category Pre-computer/slide rule Credit Gift of Mike Konshak Lot Number X3741.2007
