More @lisascenic

@jeremycherfas Those objects stir up a deep desire in me. What is the story with them?

@ablaze They are portable sundials. The compass aligns with north and then the gnomon gives an indication of sidereal time. These might be 16th century. Ivory face. A huge collection in the Pezzoli Museum in Milan.

@ablaze I have an unfulfilled obsession with sundials.