https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13972265Edit ImageSaveSaveEditCropCustom TextClocks: diagrams of water-clocks. Engraving, c. 1861.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 812 x 1200 px | 300 dpiLarge JPEG 1700 x 2512 px | 300 dpiFree DownloadClocks: diagrams of water-clocks. Engraving, c. 1861.More