The_Mannheim_Slide_Rule_Manual_
The Mannheim Slide Rule; Nos. 4031S, N4035S, N4041 and 4051. A Self Teaching Manual with tables of settings, equivalents and gauge points; by William E. Breckenridge. Published by Keuffel and Esser Company.Pamphlet dimensions are 5 1/4" width by 7 7/8" height, 83 pages; weight 82grams. Copyright Notice dated 1938, no registration or renewal on file, Public Domain as per Rule 6 of the United States Copyright Statutes. Etext created by Gerard Arthus.
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