https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13987557![Architecture: an assortment of masons tools, blocks of stone, and a folding rule. Engraving by Benard [after Lucotte].](https://images.rawpixel.com/image_social_portrait/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL3djaGNobWZwdXctaW1hZ2UuanBn.jpg)
Architecture: an assortment of masons tools, blocks of stone, and a folding rule. Engraving by Benard [after Lucotte].
Original public domain image from Wellcome Collection
Public DomainFree CC0 image for Personal and Business use