The Greenwich regulator is a superb example of the art of the British clockmaker. The movement features a Vulliamy style deadbeat escapement. A temperature compensated pendulum based on an elegant design by John Ellicott in 1752 enhances the accuracy. Maintaining power, as devised by John Arnold (1736-1799), ensures precision is retained when the movement is wound. An elegant design of epicyclic gears allows the movement to run a month before needing to be wound. A special limited edition version was made by Comitti in 2012 to celebrate Queen Elizabeth II Diamond Jubilee. The original timepiece now resides in Buckingham Palace.