Watch Glossary
1676 horological terms explained
Inspection procedure confirming eccentric gear tooth geometry matches equation curve
METAS certification for watches exceeding traditional chronometer standards
Swiss federal metrology institute certifying ultra-precision chronometer watches
Military specification requiring maximum ±20 seconds per day chronometric performance.
Military specification drop and impact testing protocol ensuring field durability.
Complete technical file proving watch meets all required military specification standards.
Specific depth rating mandated by military specification for operational field conditions.
Original U.S. military watch specification from 1940s defining ruggedness and reliability standards.
U.S. military specification for general-purpose military wristwatches issued 1968-1990.
U.S. military specification for general-purpose military wristwatches issued 1974-1990s.
US military specification for general-purpose mechanical wristwatches issued 1974-1990s.
Document issued confirming watch meets military specification requirements upon delivery.
Documentation recording all testing and inspection performed during military procurement.
Serial number system linking military watches to issuance records via MOD and NATO database archives.
MIL-W requirement for minimum submersion depth capability, typically 100m for combat use.
Hallmark or stamped symbol indicating UK Ministry of Defence approval and acceptance.
Rigorous testing protocol required for watches submitted for British military service designation.
United Kingdom Ministry of Defence requirements for serviceable military timepieces.
Official documentation proving watch passed British Ministry of Defence acceptance testing criteria.
Official verification that watch movement meets specific Swiss quality and precision standards