F.150 Data Sheet MJS-p-0107

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K&E, 4041, c.1905

Serial Number or Date Stamp:

Country: USA

Primary construction material: wd

Case included?: no

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 C ] D || cm < cm >

Back Scales: [ S L T ]

Notes: Mannheim Rule in nice condition; quite yellowed; prod. mark A11 on end of rule; square metal/glass cursor; no model number on rule

References: http://www.mccoys-kecatalogs.com/KECatalogs/1901/1901kecatp294.htm; http://www.mccoys-kecatalogs.com/Dating.htm#Specials

Date Acquired: 08/01/2020