Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition
A handbook edited by E. M. Horsburgh for the 1914 Napier Tercentenary Exhibition in Edinburgh, published by G. Bell in London for mathematicians, engineers and instrument makers. Engravings and halftones show planimeters, slide rules, calculating machines and integraphs in plan and elevation, with lettered parts, scales and dotted construction lines usable as precise line-art machine diagrams.
