This is the second part of an article describing two meridians in St Sulpice Church, Paris, by Henry Sully and Charles Le Monnier. It details their purpose for time measurement and astronomical observations, discussing restoration efforts, challenges in conservation, and the historical context of time standardization. It also covers Le Monnier's observations and the meridian's condition through the French Revolution and later centuries.
Dials: Noon Lines,
Equation of Time,
Historical Dials