Watch Glossary
1676 horological terms explained
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Beat ErrorPrecision
Asymmetry in the oscillation between left and right balance wheel swings.
Mechanical PrecisionPrecision
Exactness of manufacturing tolerances affecting timekeeping performance.
OverbankingPrecision
Excessive amplitude causing balance wheel to swing past optimal range.
Rate StabilityPrecision
Consistency of watch rate over time without external adjustment.
Rate VariationPrecision
Difference in watch rate between various positions and conditions.