F.220 Data Sheet MJS-p-0285

K&E, N4053-3, 1939

Serial Number or Date Stamp: 744677

Country: USA Primary construction material: wd Case included?: yes + box

General Description: Basic linear Mannheim slide rule

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

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

Back Scales: [ S L T ]

Notes: metal rim cursor w/ KERCS; black leather case; box; manual by Breckenridge; original owner Henry Jones, civil engineer for Bethlehem Steel railroad

References: https://www.mccoys-kecatalogs.com/KEModels/ke4056family.htm

Date Acquired: 12/15/2022