https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13966129Edit ImageSaveSaveEditCropCustom TextA knife sharpener at work with a whetstone, seated astride a bench. Watercolour by Zhou Pei Qun, ca. 1890.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 879 px | 300 dpiLarge JPEG 3095 x 2268 px | 300 dpiFree DownloadA knife sharpener at work with a whetstone, seated astride a bench. Watercolour by Zhou Pei Qun, ca. 1890.More