is there an industry now that deals specifically with time keeping devices?
Yes, clock and watch-making industry
History of timekeeping devices
The first professional clockmakers came from the guilds of locksmiths and jewellers. Clockmaking developed from a specialized craft into a mass production industry over many years.

Paris and Blois were the early centres of clockmaking in France. French clockmakers such as Julien Le Roy, clockmaker of Versailles, were leaders in case design and ornamental clocks.
who invented the first mechanical clock in 1300 Catholic monks which of the earliest civilizations used timekeeping devices? Hunter-gatherers, Prehistoric Europe, Mesoamericans, etc why did the monks invent the clock? To regulate daily prayer- and work-schedules strictly and to ensure accuracy can you give me examples of timekeeping devices? Astronomical bodies, sticks and bones to track the phases of the moon or the seasons, Stone circles, sexagesimal timekeeping, and vigesimal counting system name some of the innovations during the medieval period Clock, wristwatches, Clock of the Long Now, mechanical clock, and pendulum clock did ancient egypt use timekeeping devices? Yes, Shadow clocks and Sundials what about greece? They used water clocks, or clepsydrae, and water-based alarm clock name some of the innovations during the pre-modern period Mechanical clocks and pendulum clock is it possible to keep track of time underwater? Yes, by Marine chronometers how did the persians keep track of time? By using water clocks what device did the chinese invent to keep track of time? Outflow and inflow clepsydra
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History of timekeeping devices [SEP] Clock and watch-making industry
The competition and scientific rivalry resulting from his discoveries further encouraged researchers to seek new methods of measuring time more accurately. Clockmakers came to the American colonies from England and Holland during the early 1600s. Among the earliest known clockmakers in the colonies were Thomas Nash of New Haven, Connecticut (1638), William Davis of Boston (1683), Edvardus Bogardus of New York City (1698) and James Baterson of Boston (1707).