timekeeper

The last six months of schooling include an immersion component in which students repair Rolex timekeepers under the supervision of instructors.

By undermining the pitcher’s authority on how the innings flow, the timekeeper shortens a game’s duration.

In 1967, the world's timekeepers, an intergovernmental body called the General Conference on Weights and Measures, agreed to define time using atomic clocks, rather than by the Earth's rotation.

On one level, a main timekeeper, head judge and team leader scrutinize footage from the main camera.

Scientists use tiny minerals called zircons as geologic timekeepers.