I'm thinking of doing a little slideshow exploring the (geometric)compass and the lesser known divider in art history.
What are some paintings/drawings/engravings you like (or find hilarious) where someone is holding one of these instruments?
"Melencolia I" from 1514 by Albrecht Dürer features an angel who reminds me of my students, she had about enough of geometry puzzles. She's holding a divider which is used more often in woodworking and cartography than geometry.