Scientific American, Vol. 59, No. 23 (December 1888)
An issue of the weekly Scientific American, published by Munn & Co. in New York in December 1888 for American inventors, machinists, and patent-minded readers. The engravings are shop-tool and machine studies — sectioned pulleys, a bench shear, a dial-gauge hand tool, a combination square — drawn in fine parallel line with heavy blacks and cutaway views, useful as hardware silhouettes, measuring-scale details, and cross-section diagrams.
