Traded at, 5 Charing Cross, London, England (1798-1810); 1784 - Francis Watkins retired and was succeeded by his nephews Jeremiah Watkins (d. 1810) and Walter Watkins (d. 1798); 1810 - William Hill (d.1847), an employee, ran the business; 1818 - Jeremiah's son Francis Watkins (1800-1847) became a partner and the firm traded as Watkins & Hill; 1856 - acquired from the family by the C A and F H Elliott, sons of William Elliott, a mathematical instrument maker;