Today's #ArtifactoftheDay was used for decorating the cover and spine of leather books.
This book binding tool, similar in shape to a chisel, features a wooden handle with two decorative lines engraved in the wood. The metal end would be heated on a stove and then placed onto the leather to create a bind emboss in various decorative patterns. It could also be used with gold leaf to give the book a decorative gold finish.
See this tool on display on the History Floor or learn more at https://fal.cn/36Pqk.