The art of engraving : a practical treatise on the engravers' art, with special reference to letter and monogram engraving : specially compiled as a text-book for students and reference book and guide for engravers (1904)
Philadelphia : The Keystone · leaf 91
some makes of engraving blocks. We would advise beginners in the art to dispense with all such devices as they are not practical for reasons too numerous to mention here. You will find very few% if any, good engravers holding a ring in any other way than in their hand and on the sandbag pad when… … tion in which one would look when engraving inside a ring with the aid of this block. The little block of wood is so near the size of the ring that the thumb and finger pressing dowm against the edge of it will also strike against the ring. The object of using this little block is to hold the ring…
Engraving · Lettering · Monograms
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.