https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13974935Edit ImageSaveSaveEditCropCustom TextTwo thermometers. Process print, 1910/1940.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 787 x 1200 px | 300 dpiLarge JPEG 2150 x 3277 px | 300 dpiFree DownloadTwo thermometers. Process print, 1910/1940.More