Note 12 — Chapter XIII · ON AN IMPROVED CONSTRUCTION OF LOCK AND KEY.[12]
Reading edition
By J. Beverley Fenby, Mechanical Engineer, of Birmingham. Extracted chiefly from the Proceedings of the Institution of Mechanical Engineers, 1866.
Reading edition
By J. Beverley Fenby, Mechanical Engineer, of Birmingham. Extracted chiefly from the Proceedings of the Institution of Mechanical Engineers, 1866.