Watch Glossary
1104 horological terms explained
Container holding the mainspring that stores and releases energy to power the watch
French for house; prestigious watchmaking company with heritage and identity
Highly accurate navigation instrument used aboard ships to determine longitude at sea.
Average solar day length used as standard for watch regulation before atomic time
Submariner depth rating printed as meters before feet, rare vintage dial variant.
Rate variation at intermediate temperatures despite compensation mechanisms
Military Submariner issued to armed forces, featuring lollipop dial and dial printing variations.
Watch officially issued by British Ministry of Defence to military personnel for field operations.
Official record documenting authorized changes to military-issue watches during service life maintenance.
Physical property of balance wheel oscillation that enables continuous operation without external intervention
Omega Speedmaster Professional, official NASA moon landing chronograph from Apollo missions.