https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13960139Edit ImageSaveSaveEditCropCustom TextEngineering: cross-sections of the hammer designed by John Smeaton for use in iron manufacture. Engraving by W. Lowry after J. Farey the younger.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 913 x 1200 px | 300 dpiLarge JPEG 2385 x 3136 px | 300 dpiFree DownloadEngineering: cross-sections of the hammer designed by John Smeaton for use in iron manufacture. Engraving by W. Lowry after J. Farey the younger.More