Slide Rule & Circular Calculator Instructions15 Books on CD Here is the list of great books you will receive in PDF format on one CD: The Slide Rule; A Practical Manual (1903) - 130 PagesA Treatise on a Box of Instruments and the Slide-Rule: For the Use of Gaugers Engineering Seamen and Students (1872) - 266 PagesThe Mannheim Slide Rule; Complete Manual with Tables of Settings Equivalents and Gauge Points (1909) - 40 PagesDepartment Store Statistics with the Aid of the Slide Rule (1914) - 158 PagesHandbook of the Double Slide Rule Shewing Its Applicability to Navigation (1864) - 188 PagesThe Use of the Slide Rule (1920) - 48 PagesSlide-Rule Instructor for Instruction on Chadwick's Improved Slide Rule Containing New and Important Rules Upon the Present Practice of Engineering etc. (1893) - 90 PagesSlide-Rule Notes (1913) - 144 PagesSolution of Railroad Problems by the Slide Rule (1913) - 156 PagesThe Complete Slide Rule Instructor Containing Upwards of Three Hundred Questions and Solutions for the Improved Slide Rule (1858) - 93 PagesThe Slide Rule and How to Use It (1896) - 182 PagesMensuration and Practical Geometry; Containing Tables of Weights and Measures Vulgar and Decimal Fractions mensuration of Areas Lines Surfaces and Solids (1858) - 336 PagesOn the History of Gunter's Scale and the Slide Rule During the Seventeenth Century (1920) - 32 PagesHand-Book of the Slide-Rule (1876) - 346 PagesThe Mechanic's Assistant: A Thorough Practical Treatise on Mensuration and the Sliding Rule (1856) - 299 Pages This high quality CD comes to you shipped in a paper sleeve via first class mail. Orders received before 2pm CST will go out the same day they are placed. Orders are shipped out 6 days a week.These rare books are hard to find because they are out of print. The information contained on this DVD would cost thousands of dollars to acquire physical copies of these books even if you were able to find copies. These books have entered the public domain which allows them to be compiled into this compilation for you. Books published before 1923 have all entered the public domain as of January 1st 1998. Under the terms of the Digital Millennium Copyright Act book published between 1923 and 1964 inclusive are public domain in the United States because the US Copyright was not renewed in a timely fashion. Works produced by the US Government are not entitled to domestic copyright protection under U.S. law.