Watch Glossary

U.S. military specification for general-purpose military wristwatches issued 1974-1990s.

US military specification for general-purpose mechanical wristwatches issued 1974-1990s.

Fine interlocked metal mesh bracelet, smooth comfort and elegant vintage appeal

Decorative beaded metal edge surrounding gem setting, adds visual definition.

Document issued confirming watch meets military specification requirements upon delivery.

Documentation recording all testing and inspection performed during military procurement.

Prescribed hardness levels for case metal required under military watch contracts.

Specialized dial printing process meeting military legibility and durability specifications.

Radium-based or zinc sulfide lume application meeting MIL-W nighttime visibility specs.

Caliber requirements for shock resistance, accuracy, and reliability in combat conditions.

Engraved calendar reference on MOD-issued watches tracking serviceable operational period.

Abbreviated code printed on military-issue dial indicating service branch and acceptance specification.

Matte or slightly textured dial finish reducing glare for field operations visibility.

Enhanced case sealing technology required by MIL-W specifications achieving 300m+ water resistance.

Robust military-spec bracelet typically featuring solid links and enhanced security clasp mechanisms.

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.

Military Submariner issued to armed forces, featuring lollipop dial and dial printing variations.

Watch showing no signs of wear, original finish intact, functionally perfect

Mechanism that chimes the time in hours, quarter hours, and minutes when a slide or pusher is activated.

Outer dial ring with minute markers or railway design for precise time reading.

Wheel rotating once per hour on cannon pinion, drives hour wheel in motion works

Highly reflective polished surface resembling mirror quality

Achieving a highly reflective, glass-like finish on watch surfaces through precision polishing.

Meca-quartz hybrid, mechanical chronograph with quartz timekeeping, battery powered operation

Hallmark or stamped symbol indicating UK Ministry of Defence approval and acceptance.

Rigorous testing protocol required for watches submitted for British military service designation.

British military protocol for hermetic caseback closure ensuring pressure resistance.

Watch dial conforming to UK Ministry of Defence specifications for military contract watches.

United Kingdom Ministry of Defence requirements for serviceable military timepieces.

Watch officially issued by British Ministry of Defence to military personnel for field operations.

Specific movement caliber selected and approved by British Ministry of Defence for issue.

Official record documenting authorized changes to military-issue watches during service life maintenance.

British military specification requiring sealed caseback to prevent debris infiltration.

Marking applied to watches serviced through official British military maintenance channels.

Official documentation proving watch passed British Ministry of Defence acceptance testing criteria.

British military approval for tritium-based luminous material on dials and hands.

Contemporary luminous material specifications balancing safety, brightness, and longevity

Chronograph mounted on base movement, 7750 on 2824 base, allows customization

Physical property of balance wheel oscillation that enables continuous operation without external intervention

TAG Heuer's iconic square-cased chronograph from 1969

Single-piece case construction where the entire case is machined from one solid block of material.

Chronograph operated by single pusher button for start, stop, and reset functions.

Mechanical display showing lunar phases through rotating disk behind aperture on dial.

Aperture showing the current lunar phase, cycling every 29.5 days with rotating disc mechanism.

Complication displaying lunar phases with rotating disc showing moon's illumination cycle.

Omega Speedmaster Professional, official NASA moon landing chronograph from Apollo missions.

Watch stored for years with congealed oils; requires full service before operation.

Iridescent nacre from mollusk shells used decoratively on watch dials

Gear assembly converting center wheel rotation to hour wheel and minute wheel motion

Official designation identifying specific watch movement design and manufacturing source

Official verification that watch movement meets specific Swiss quality and precision standards

Examination of accumulated particles inside movement to assess storage conditions.

Decorative treatment of watch movement including Côtes de Genève and polishing

Specialized tool for securely holding watch movement during service and repair

Device preventing unwanted rotational movement during assembly or disassembly operations

Elastomer component reducing transmission of external vibrations to delicate watch movements during servicing.

Flexible jointed support structure in movement holders enabling 360-degree rotational access to calibers.

Modern movement holder incorporating sensors to detect unintended orientation shifts during service work.

Threaded collar mechanism in movement holders that securely grips movements by case lugs or bridges.