https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13976840Edit ImageSaveSaveEditCropCustom TextHydraulics: a suction pump with an elaborate regulator. Engraving, 1754.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 751 x 1200 px | 300 dpiLarge JPEG 2190 x 3500 px | 300 dpiBest Quality JPEG 2298 x 3672 px | 300 dpiFree DownloadHydraulics: a suction pump with an elaborate regulator. Engraving, 1754.More