A reversed copy of a chalk drawing created by passing the original drawing, together with a moistened blank sheet of paper placed on top of it, through a printing press. The pressure of the press, and the friable nature of the medium, cause the design of the original drawing to be duplicated, albeit in reverse, on the dampened piece of paper. Printmakers found the technique useful because they could work from a design that was the correct way around for engraving a copper plate. The process was also used to adhere or fix more friable media to the support. A characteristic of counterproofs is their flattened appearance, from having been passed through the press.