WatchesAtlas / Watch knowledge
The Watch Encyclopedia
Understand the details that make a watch.
3 terms
Clear filtersPerformance & measurement
Bar
A unit of pressure used in watch water-resistance specifications.
Performance & measurementBeat error
A measure of asymmetry between alternating beats of a mechanical movement, commonly assessed with a timing instrument.
Performance & measurementBPH
The number of half-oscillations or beats of a regulating system in one hour.