A coordinatograph is a machine that precisely cuts rubylith. It was used to create photomasks for early integrated circuits including the Intel 8008. A scaled version (e.g., 100X) of the photomask would be cut and peeled in rubylith, and then the rubylith image would be photographically reduced.
- Martel, Michael L., ed. (2007), From Vacuum Tubes to Nanotubes: An Amazing Half Century: The Emergence of Electronic Circuit Technology 1957-2007, IPC, p. 113