Frederick Post Company
||Scratched on the back of the slide rule
||Donor's ID number for rule
overall: 3/8 in x 6 1/2 in x 1 5/8 in; overall: 1/4 in x 6 in x 1 3/8 in
The name: "Hammes" is scratched on the back of the slide rule. The object consists of the slide rule and case.
Pre-computer: slide rule
Gift of Mike Konshak