A timekeeper is an instrument or person that measures the passage of time.
A timekeeper is often referred to as a time clock, which tracks employee time. Collecting such data gives employers insight into their workforce. They can then make operational decisions to increase productivity and reduce labor costs.
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- A Walk Through Time at the National Institute of Standards and Technology
- "Treatise for Observers on Constructing the Circle of Projection" is a manuscript, in Arabic, from 1473, about timekeeping.