The Mannheim and Polyphase Slide Rules ( Mannheim Type ) Complete Manual with Tables of Settings, Equivalents and Gauge Points BOUND WITH Supplement The Slide Rule and Plane Trigonometry. Wm. Cox, J. M. Willard, William.
The Mannheim and Polyphase Slide Rules ( Mannheim Type ) Complete Manual with Tables of Settings, Equivalents and Gauge Points BOUND WITH Supplement The Slide Rule and Plane Trigonometry
The Mannheim and Polyphase Slide Rules ( Mannheim Type ) Complete Manual with Tables of Settings, Equivalents and Gauge Points BOUND WITH Supplement The Slide Rule and Plane Trigonometry
The Mannheim and Polyphase Slide Rules ( Mannheim Type ) Complete Manual with Tables of Settings, Equivalents and Gauge Points BOUND WITH Supplement The Slide Rule and Plane Trigonometry
The Mannheim and Polyphase Slide Rules ( Mannheim Type ) Complete Manual with Tables of Settings, Equivalents and Gauge Points BOUND WITH Supplement The Slide Rule and Plane Trigonometry

The Mannheim and Polyphase Slide Rules ( Mannheim Type ) Complete Manual with Tables of Settings, Equivalents and Gauge Points BOUND WITH Supplement The Slide Rule and Plane Trigonometry

New York , Hoboken N. J. , Chicago, St. Louis, San Francisco, Montreal: Keuffel & Esser Co. 1920. First Edition. 37, 8, [1], [3-ads] pages. 5 3/4 x 8 3/4 inches. Printed buff stapled wrappers, rounded corners as issued. Previous owner name on front cover. Creasing, wear and soiling to covers and spine panel. Clean internally noting a few marginal tears. A working copy, but sound. Good. Staplebound. [27331]


Original price fifty cents. Printed 'B' lower left front corner and title page, perhaps indicating a later edition of this manual. We are aware of an edition from 1917 as well.

What rules this specific guide is useful for isn't completely clear. Page 2 contains a NOTICE that this manual applies "particularly to rules Nos. 4031 to 4041, and does not completely cover our newer rules, Nos. 4041F to 4051, which have a slightly different arrangement of the scales on the slide, necessitating these special directions." The balance of Page 2 includes instructions for some of the later rules. So far so good. Page 3 (the start of the "regular manual") notes "Catalogue of Keuffel & Esser Co., Nos 4031 to 4056". The Polyphase Slide rule appears on page 16 (No. 4053-3).

No doubt the manual is of use to most users of K&E rules, as the basic principles are transferrable without significant loss of understanding.

Price: $15.00