F.200 Data Sheet MJS-p-0406

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K&E, 4091-3, 1933

Serial Number or Date Stamp: 456328

Country: USA

Primary construction material: wd

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: L LL1 DF [ CF CIF C ] D LL3 LL2

Back Scales: LL0 A [ B K CI ] T S2 S1

Notes: Log Log Duplex Decitrig; early scale set, no CI on front; owner R.J. Paoletti, 1933, on case

References: https://www.mccoys-kecatalogs.com/KEModels/ke4091-3family.htm

Date Acquired: 01/03/2026