Up for sale is a highly collectible and beautifully preserved antique Crocker Graver Sharpener / Tool Sharpener. This is a vital precision tool for watchmakers, clock repairers, and traditional hand-engravers, used to hold gravers at exact geometric angles during honing. Specifications: • Manufacturer: Crocker • Patent Date: November 9, 1907 • Material: Solid Brass, Steel, and Wood • Application: Watchmaker graver sharpening, lathe tool honing, jewelry engraving