Rectangle of light stone mounted on wooden rest. Used for smoothing the rough edges of knives and chisels after they have been sharpened on grind stone GA*03210.21. One of a group of woodblock-cutter's tools used in Graphic Arts exhibit of Japanese printmaking techniques from about 1890 to 1990s. Identified as No. 20 in watercolor drawing GA 03209.02 showing the tools of the block cutter.