https://www.stormtype.com/families/cuper/

Compur is the name of the most famous photographic shutter of all time. This is a reconstruction of a type face which served for describing various devices, using the technique of monolinear engraving. With its soft forms, stringency of signs and period accent it ranks among the display alphabets offering the widest use in magazines, on posters and – for description of devices. It comes right in small sizes and in inscriptions arranged in a circle.