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..... More
