Watch Glossary

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

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.

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

Decorative treatment of watch movement including Côtes de Genève and polishing

Specialized tool for securely holding watch movement during service and repair

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

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

Soft elastomer or leather-lined component in movement holders that prevents damage to fragile watch parts.

Vertical positioning system on movement holders that positions calibers at ergonomic working heights.

Ferrous metal foundation on movement holders allowing positioning on workshop ferrous work surfaces.

Bearing-mounted swivel on movement holders enabling 360-degree horizontal rotation without component stress.

Thorough visual examination of all movement components for damage or wear

Comprehensive evaluation of mechanical movement performance parameters.

Dial with multiple depth levels creating three-dimensional appearance