F.165 Data Sheet MJS-p-0302

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K&E, 4071, 1915

Serial Number or Date Stamp:

Country: USA

Primary construction material: wd

Case included?: yes

General Description: Basic linear polyphase duplex slide rule

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

Front Scales: A [ B C ] D

Back Scales: A [ BI CI ] D

Notes: Early Duplex rule; mahogany edges; all-glass cursor; Duplex Slide Rule on box; prod. marks 19 on end

References: http://www.mccoys-kecatalogs.com/Dating.htm

Date Acquired: 05/08/2023