https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13980357Edit ImageSaveSaveEditCropCustom TextEngineering: point-changing mechanisms for railway track in plan and side elevation. Engraving by W. Read after E. Galloway.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 668 px | 300 dpiLarge JPEG 3500 x 1949 px | 300 dpiBest Quality JPEG 3620 x 2016 px | 300 dpiFree DownloadEngineering: point-changing mechanisms for railway track in plan and side elevation. Engraving by W. Read after E. Galloway.More