roskopfEtymologyInvented by Georges Frederic Roskopf (1813–1889), German-Swiss watchmaker.roskopf means an inexpensive, less accurate lever escapement, used in some clocks and watches. Lexicurio rates it Sui generis — a strength score of 100 out of 100.nounAn inexpensive, less accurate lever escapement, used in some clocks and watches.