K & E Slide Rule N4181-1 (1947)

Kueffel & Esser Co. - New York
Scales: A-B-C-C1-CF-CF1-D-DF-K-L-LL1-LL2-LL3- LL01-LL02-LL03-S-SRT-T
Overall length: 7 inches (Ruled portion = 5 inches)