Watch Glossary

1045 terms · 5 shown

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.