The Risdon Iron Works - Catalogue No. 7: Air Compressing Machinery and Improved Rock Drills is a high-quality reprint of the original edition from 1897. This technical book provides a deep insight into the technologies and machines developed for air compression and the improvement of rock drills. It is part of Hansebooks' efforts to preserve and make historical literature accessible. The publication is aimed at professionals and enthusiasts in the fields of mathematics and natural sciences who wish to engage with the technical developments and their historical context. By reissuing rare works, Hansebooks contributes to the preservation of valuable knowledge that is significant for future generations.