By Florian Cajori
The slide rule, with its many diversifications, has been very important to arithmetic and engineering considering that its invention within the seventeenth century. curiosity during this box has grown dramatically and creditors can nonetheless locate a lot fabric at reasonable costs. regrettably there was little info to be had with the exception of brands manuals and catalogs, making this reprint of Cajori's vintage quite priceless. additionally integrated with this reprint of the 1910 version is Cajori's large article at the background of Gunter's Scale and the Slide Rule through the seventeenth Century, released by way of the college of California in 1920, which units forth his next findings. there's additionally a worthwhile explanatory advent by way of Dr. Robert okay. Otnes, editor of the magazine of the Oughtred Society. 178 pages. Illustrated. 61/8" x 91/4". difficult conceal.