F.227 Data Sheet MJS-p-0407

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K&E, 68-1100, 1974

Serial Number or Date Stamp: 240194

Country: USA

Primary construction material: pl

Case included?: yes

General Description: Advanced linear log-log duplex slide rule

Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.

Front Scales: Sq1 Sq2 DF [ CF CIF L CI C ] D LL0 LL1 LL2 LL3

Back Scales: LL03 LL02 LL01 LL00 A [ B T SRT S C ] D DI K

Notes: Deci-Lon 10; late version with no finger grips; many thanks to Eamonn Gormley!

References: https://www.mccoys-kecatalogs.com/KEModels/ke68-1100family.htm

Date Acquired: 01/26/2026