Design for Elevation for Elaborate Wall and Vault with the Savoya Arms

Anonymous, Italian, Piedmontese, 18th century · 1700–80 · Pen and brown ink, brush and gray wash and watercolor, over leadpoint or graphite, with ruled and compass construction; scale, at bottom, in pen and brown ink; framing lines in pen and dark brown ink

From the collection of The Metropolitan Museum of Art. Free to download, adapt and use — no permission needed.