Some predecessors to the modern clock may be considered "clocks" that are based on movement in nature: A sundial shows the time by displaying the position of a shadow on a flat surface. There is a range of duration timers, a well-known example being the hourglass. Water clocks, along with sundials, are possibly the oldest time-measuring instruments. A major advance occurred with the invention of the verge escapement, which made possible the first mechanical clocks around 1300 in Europe, which kept time with oscillating timekeepers like balance wheels., pp. 103–104., p. 31.
some predecessors to the modern clock may be considered "clocks" that are based on movement in nature a sundial shows the time by displaying the position of a shadow on a flat surface there is a range of duration timers a well-known example being the hourglass water clocks along with sundials are possibly the oldest time-measuring instruments a major advance occurred with the invention of the verge escapement which made possible the first mechanical clocks around 1300 in europe which kept time with oscillating timekeepers like balance wheels pp 103–104 p 31