F.220 Data Sheet MJS-p-0040

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K&E, N4053-5, 1937

Serial Number or Date Stamp: 633813

Country: USA

Primary construction material: wd

Case included?: yes

General Description: Basic linear polyphase slide rule

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

Front Scales: in /| A [ B CI C ] D K || cm

Back Scales: [ S L T ]

Notes: Polyphase; 20in slide rule; very nice condition; serial numbers on left bottom edge and slide

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

Date Acquired: 08/18/2017