https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14005891Edit ImageSaveSaveEditCropCustom TextArchitecture: the roof trusses of three chapels compared. Engraving by A. Dick, 1847, after M. A. Nicholson.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 890 x 1200 px | 300 dpiLarge JPEG 1489 x 2007 px | 300 dpiFree DownloadArchitecture: the roof trusses of three chapels compared. Engraving by A. Dick, 1847, after M. A. Nicholson.More