F.25 Data Sheet MJS-p-0331

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Bruning, 2401, c.1947

Serial Number or Date Stamp:

Country: USA

Primary construction material: pl

Case included?: yes

General Description: Basic linear polyphase simple slide rule

Length of 1 decade = 5 in, and overall scale length = 5 in. The largest physical dimension is 5 in.

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

Back Scales: [ S L T ]

Notes: Fine leather case with Bruning and logo; instructions, dated 1947; DRAVO insignia on back of rule; missing cursor

References: https://sliderulemuseum.com/MiscUSA.shtml#Bruning

Date Acquired: 12/14/2023