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A Roman era sundial on display at a museum in Side, Turkey The Romans used various ancient timekeeping devices . According to Pliny , Sundials , or shadow clocks, were first introduced to Rome when a Greek sundial captured from the Samnites was set up publicly around 293-290 BC., [ 2 ] with another early known example being imported from Sicily ...
Devices and methods for keeping time have gradually improved through a series of new inventions, starting with measuring time by continuous processes, such as the flow of liquid in water clocks, to mechanical clocks, and eventually repetitive, oscillatory processes, such as the swing of pendulums. Oscillating timekeepers are used in modern ...
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Six-hour clock at the Quirinal Palace, Rome. The six-hour clock (Italian: sistema orario a sei ore), also called the Roman (alla romana) or the Italian (all'italiana) system, is a system of date and time notation in Italy which was invented before the modern 24-hour clock.
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Article needs some focus. It is titled the history of timekeeping devices, but it reads like a wider article on the history of timekeeping in general. For example, the entire section on Sumer doesn't mention a single clock or device, but instead focuses on Sumer's calender.
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In small businesses sometimes time books are used as attendance book, to register the time employees work. They can be used as alternative for a time clock at the entrance of a company, where employees check in. Another system is the time sheet, a form where employees fill in the hours worked. [27]