Whetstone

Description

A tool designed for sharpening the blades of metal objects (knives, axes, chisels, saws, etc.).
It is an arc-shaped fragment of an abrasive grinding wheel for a stationary electric sharpening machine, separated from the central part of the disc. The sharpening stone is made of compacted medium-grit abrasive material. Clear natural fracture lines are visible on both end surfaces.