F.187 Data Sheet MJS-p-0273

K&E, 4092-5, 1923

Serial Number or Date Stamp: 63063

Country: USA Primary construction material: wd Case included?: yes

General Description: Advanced linear log-log duplex slide rule

Length of 1 decade = 20 in, and overall scale length = 20 in. The largest physical dimension is 20 in.

Front Scales: DF [ CF CIF CI C ] D L

Back Scales: LL0 A [ B S T C ] LL3 LL2 LL1

Notes: Early 20in version of Log Log rule; no K scale

References: https://www.sliderulemuseum.com/KE_Standard.htm

Date Acquired: 10/06/2022