Watch Glossary
1356 horological terms explained · 1/3
Full 24-hour time scale instead of standard 12-hour format
Lightweight anodized aluminum bezel insert with printed scale
Low-power screen remaining visible without draining battery via reflective or e-ink substrate
Mechanical watch face combined with auxiliary smartwatch LCD/OLED complication screen
Window or opening in dial revealing complications like date or moonphase.
Dial hour markers individually applied and set separately from dial surface for sophistication.
Metal or material indices affixed to dial surface for superior aesthetic and durability.
Standard numerical hour markers using Arabic numeral style
Rectangular gemstone cut with step facets, commonly used in watch bezels and hour markers.
Technique securing rectangular gemstones between parallel metal bars.
Manufacturing specification ensuring consistent diagonal angle of barleycorn lines ±1-2°.
Tolerance range for individual barleycorn element orientation deviations.
The calculated radius of curved barleycorn grain element profiles.
The uniformity of grain direction orientation across entire barleycorn dial surface.
The smooth progressive angle change across barleycorn pattern field.
Orientation specification indicating primary diagonal flow direction of grain texture.
The angular spacing between successive barleycorn grain elements on a dial surface.
Repeating grain-like diagonal striations mimicking barley texture on finished dial surfaces.
Simplified rectangular hour markers minimizing complexity while maintaining readability
Simple rectangular hour markers without numerical designation
Dial design featuring raised circular bezants beneath applied gemstone indices.
Rotating bezel functioning in both clockwise and counterclockwise directions
Hour marker featuring brilliant-cut gemstone for enhanced light refraction.
Subtle broad arrow symbol sometimes engraved on dial indicating military manufacture.
Matte finish achieved through directional abrasive surface treatment.
Carbon fiber or carbon composite dial offering lightweight durability and contemporary appearance
Durable scratch-resistant material inlaid in rotating bezel
Separate ring containing hour markers applied to dial surface
Rolex's proprietary luminous material providing blue glow and superior visibility in darkness.
Finishing technique polishing raised dot edges while preserving textured surface.
Regular pattern of punched dots creating a raised nail-head texture on dial surfaces.
The sharpness of specular light reflection peaks on clous de Paris pyramids.
The recessed spacing surface between adjacent clous de Paris pyramid elements.
The keenness of peak points in clous de Paris pyramid relief structures.
Three-dimensional variation of clous pattern with enhanced raised dots for shadow depth.
Measurement of pyramid height variation in clous de Paris guilloché patterns.
Bezel with raised ridges resembling coin milling for grip
Rotating bezel marked with cardinal directions for navigation
Inward-curved dial surface creating depth illusion
Nested circular patterns on dial creating depth and visual layering.
Decorative pattern of nested circular lines on dial or case
Multiple circular scales or rings printed concentrically on dial
High-contrast dial design for easy reading underwater in low light conditions.
Bezel with numbers increasing from zero for elapsed time tracking
Secondary subdial displaying alternative time or function measurement
Luminous material with textured surface increasing light absorption
Double-direction barleycorn pattern creating dense interlocking diagonal texture on dial.
Dial with cross or target pattern in center for vintage military style
Dial specifically designed for individual client specifications
Uniquely designed hour indices created for specific model
Rolex's magnifying lens over date window magnifying by 2.5 times
Decorative technique using contrasting metal wire for surface patterns
Rotating disc beneath dial displaying current calendar date
Tapered luxedo-style hands typical of dress watches like Cartier Tank
Twin windows displaying both day of week and calendar date in separate apertures
Analog dial indication of current water depth; requires special pressure sensor.
Water resistance scale printed on dial indicating maximum depth
Fracture in enamel or lacquer dial surface; typically irreversible damage.
Small posts on dial underside securing it to movement bridges.
Natural aging patina development on vintage dial lacquer, creating unique color shifts and spotting.