https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13973956Edit ImageSaveSaveEditCropCustom TextHydraulics: two human-driven [] pumps. Woodcut, 1659.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 485 x 1200 px | 300 dpiLarge JPEG 1000 x 2475 px | 300 dpiFree DownloadHydraulics: two human-driven [] pumps. Woodcut, 1659.More