Antique Slide Rule Manuals Books, 1900s Picworth, Hodgson, Mechanics, Engineering

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A lot of 2 slide rule manuals from the late 1800s to early 1900s. Included are:

The Slide Rule: A Practical Manual by C.N. Pickworth - Eighth Edition dated 1903. Hard Cover with 104 pages. Some cover wear. Stamped Purdy on first page. Pages very nice and clean.

The Mechanics' Slide Rule, and How To Use It by Fred T. Hodgson - Work Manuals No. II. Copyright 1881 - Paperback. 29 pages plus list of other industrial books. Cover use and soiling, stamped Purdy several places. Pages all in good clean shape with slightly bent corners and edge soiling.

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