Longcase Clock showing Mean Solar and Sidereal Time.
Daniel Quare circa. 1715.
The clock has two near identical trains sharing a common frame. Each train has its own wood rod pendulum which is rated accordingly. Equation of time is indicated in the arch. The clock was commissioned by Greenwich Hospital and remains to this day in their collection. Currently displayed in The Queen's House, part of the National Maritime Museum Greenwich, A World Heritage Site. - Dial indicating Sidereal Time on the left and Mean Solar Time on the right. Equation of time and annual calendar in the arch