Keuffel & Esser Co. The Log Log Duplex Slide Rule Self-Teaching Manual 1926 K&E

 William E. Breckenridge

 New York

 Staple Bound

 Science & Technology  -  Engineering - Illustrated

 English - United States

 A Self-Teaching Manual With Tables Of Settings, Equivalents And Gauge Points

138 pages.   5.25" x 8.00"   Used

 The cover is missing from the staple binding. 

 The pages are clean with no writings or markings, signs of age.