John Wolff's Web Museum

An online museum documenting the history, mechanisms, and technical workings of mechanical and early electronic calculating machines. The collection, assembled over 50 years, features machines organized by technology type and manufacturer, with photographs, technical specifications, and detailed descriptions of internal mechanisms produced through hands-on disassembly and study. Established as a public website in 2002, the museum also incorporates collections assembled by engineer John Blackler and the late Professor Alan Bromley of the University of Sydney.