F.150 Data Sheet MJS-p-0199

K&E, 4054, 1921

Serial Number or Date Stamp:

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

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

Back Scales: [ S L T ]

Notes: Favorite Mannheim, early model, wood edges; very nice condition, box as well; prod marks 102 on edge; my 200th slide rule

References: https://www.sliderulemuseum.com/KE_Standard.htm

Date Acquired: 07/19/2021