The phrase "great draftsmen" refers to skilled artists or designers who are very good at creating accurate and detailed drawings or plans. Full definition
Thank god it's not a test that you have to take — because it has nothing to do with how great a draftsman he is. (aaa.si.edu)
He «was considered one of the great draftsmen of his era. (nyss.org)
This exhibition presents seventeen exceptional drawings and three letters by Jean - Auguste - Dominique Ingres (1780 — 1867), one of the greatest draftsmen and portraitists in French history. (themorgan.org)