https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13951872Edit ImageSaveSaveEditCropCustom TextPneumatics: scientific equipment. Coloured engraving by J. Emslie, 1850, after himself.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 954 x 1200 px | 300 dpiLarge JPEG 1595 x 2006 px | 300 dpiFree DownloadPneumatics: scientific equipment. Coloured engraving by J. Emslie, 1850, after himself.More