Writing the history of one of the most interesting machines in Heidelberg’s history is quite a challenge. After all, the Heidelberg GTO is not just a printing press. If you needed a non-standard job that could not be done by conventional means – the Heidelberg GTO is at your service! A thick book could be … Continue reading Heidelberg GTO (1972-2014) overview. Part 1. A Printing Press From The Guinness Book of World Records.