ltwilliammowett:Silver equinoctial sundialwith compassFirst made as a simple sundial by Antoine Ferr
ltwilliammowett:Silver equinoctial sundialwith compassFirst made as a simple sundial by Antoine Ferrier 1616, later modified by Michael Butterfield around 1700. With the compass, the equinoctical sundial and the the table of latitudes. -- source link