He adored all clocks and watches. In the end there were no fewer than seven clocks in his bedroom (their ill-synchronized chiming drove his attendants mad), while another clock in the antechamber told not only the hour but also the direction of the wind. Hooke's balance-spring action was demonstrated in front of the King, while the royal accounts contain many items for the purchase of further clocks. The sun-dial (in the Privy Garden) had a particular function for the King used it to set his watch by.
Antonia Fraser, King Charles II