In reality little had been done beyond the tracings on the map. The project had remained a project.
The movements to be registered are transferred to the style or pen by one or more levers, and the pen in turn transfers them to the cylinder, where they appear as legible tracings.
It is forbidden to make tracings from photographs or to write on paper placed over prints.
I tend to use tracings of images, to make up for my lack of drawing skill.
Or more likely to do delicate tracings by a lazy river sipping a crushed ice smoothie?