https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13988679Edit ImageSaveSaveEditCropCustom TextHydraulics: a lobed water-pump mechanism. Engraving by Mutlow after Blunt.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 693 x 1200 px | 300 dpiLarge JPEG 1150 x 1992 px | 300 dpiFree DownloadHydraulics: a lobed water-pump mechanism. Engraving by Mutlow after Blunt.More