Reaper/haymaker sharpening his scythe with a whetstone 19th century Metal edged tools such as this needed constant sharpening The whetstone was also...
{"Image ImageDescription": "Reaper/haymaker sharpening his scythe with a whetstone, 19th century. Metal edged tools such as this needed constant sharpening. The whetstone was also known as a side stone. (Photo by Oxford Science Archive/Print Collector/Getty Images)", "Image Copyright": "Oxford Science Archive / Heritage Images"}