F.221 Data Sheet MJS-p-0221

K&E, N4092-5, 1936

Serial Number or Date Stamp: 547636

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: K DF [ CF CIF CI C ] D L

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

Notes: Log Log Duplex; long scale; improved metal framed cursor, missing spring; stitched case, missing flap

References: https://www.mccoys-kecatalogs.com/KECollection/4092-3/ke4092-3familyrules.htm

Date Acquired: 10/05/2021