An engraver is a person who, using tools called gravers, cuts a design, monogram, pattern, etc. onto the surface of metal. Traditionally this is all done by hand with hand tools. There are engraving machines available today and they are generally used to engrave monograms, dates, and words onto metal objects.
Victorian Floral and Foliate Motif Engraved 18k Yellow Gold Locket c.1890.
A Master Engraver uses Gravers to Decorate the Movement on a Swiss Watch.