https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14002042Edit ImageSaveSaveEditCropCustom TextA woman looking through a level and holding a ruler and compasses, standing in front of a grid; representing perspective. Engraving by E. Delaune, ca. 1560.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 490 x 1200 px | 300 dpiLarge JPEG 1181 x 2893 px | 300 dpiFree DownloadA woman looking through a level and holding a ruler and compasses, standing in front of a grid; representing perspective. Engraving by E. Delaune, ca. 1560.More