https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13993126Edit ImageSaveSaveEditCropCustom TextInventions: a rat-trap (top) a bellows (centre) and an electrical capacitor [] (below). Engraving.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 950 x 1200 px | 300 dpiLarge JPEG 2507 x 3168 px | 300 dpiFree DownloadInventions: a rat-trap (top) a bellows (centre) and an electrical capacitor [] (below). Engraving.More