Watch Glossary

Diagonal cross-hatching pattern imitating linen fabric weave structure on dial surface.

Pattern intersection points where horizontal and vertical linen lines cross on dial.

The directional orientation of linen weave pattern relative to dial center.

Individual connected segment forming a bracelet, connected by pins or rivets.

Specialized tool for removing pins or springs to adjust bracelet length

Amorphous metal alloy used for watch bezels and components, offering extreme hardness and durability.

Exotic reptile skin strap, lightweight with unique textured appearance

Non-linear mathematical scale for multiplication and division calculations

Oversized Mercedes hour hand resembling lollipop, found on military Submariner models.

British competition offering substantial reward for solving maritime longitude determination problem

Challenge of determining a ship's east-west position at sea, solved through precise timekeeping

Number of seconds per day a watch runs behind correct time.

Cellular radio allowing standalone calling, texting, and data without paired smartphone

Adding appropriate lubricants to watch components for smooth mechanical operation

Protruding attachment points on the watch case where bracelets or straps connect.

Terminology describing discomfort when lugs press against wrist bone or surrounding tissue.

Technical review evaluation of lug shape, angle, and curvature affecting comfort.

Negative review terminology for cases where lugs extend beyond wrist bone structure.

Technical specification detailing the arc radius of case lugs affecting wrist fit.

Review language assessing how securely spring bars hold bracelet end links to case.

Review assessment of how smoothly lugs transition from case middle to end links.

Polishing and erosion visible on case lugs from bracelet friction over time.

Space between the lugs where the strap or bracelet attaches.

Measurement between watch case attachment points determining wrist fit compatibility

Rating system evaluating how well a watch's end-to-end length suits average wrist dimensions.

Measurement between the inner edges of the lugs, determining strap and bracelet fit on the wrist.

Review assessment of gap between case lugs and wrist, indicating proper fit.

Mathematical calculation of lug extension distance relative to wrist circumference.

Projections on the case that hold the strap or bracelet.

Abbreviation for luminous material applied to hands and markers.

Radioactive or photoluminescent coating on hands and indices for night visibility

Process of applying luminous material to watch dials, hands, and hour markers

Initial intensity of luminescence immediately after light exposure before degradation occurs

Luminous fill color; typically green, blue, or white for underwater visibility.

Quality of luminous material to adhere properly to dial surface without peeling or degrading

Visual difference between luminous and non-luminous dial areas visible in darkness

Percentage and area of watch dial, hands, and indices coated with luminous material

Gradual loss of luminescence brightness and duration in watch hands and dials over extended time

Dial coated with luminous material for low-light visibility

Process of filling dial cutouts with luminous material for enhanced visibility and aesthetics

Duration and persistence of a watch's luminous glow, measured in hours of visibility in darkness

Consistency between luminous brightness levels on dial, hands, and markers in darkness

Aged appearance of vintage luminous material showing discoloration, yellowing, or browning over time

Resistance of luminous coatings to fading, degradation, and environmental exposure over time

Area of luminescent material applied to hands for extended visibility in darkness

Applied luminous hour markers on dial, typically rectangular shapes on vintage sports watches

Condition fault where luminous material flakes or peels from dial or hands due to age.

Photograph of a watch taken in darkness showing the glow of luminous materials on dial and hands

Amount of luminous material applied to watch components affecting brightness and durability

Consistent application of luminous coating across dial ensuring even brightness throughout

Advanced luminous material providing superior glow intensity and longer phosphorescence duration.

Hour markers filled with luminescent material enabling nighttime visibility

Seiko's luminous coating providing bright glow and long-lasting luminescence on watch dials

Measure of how brightly and for how long a watch's luminous material glows in darkness

Glow-in-the-dark hour markers and hands enabling underwater visibility in darkness.

Phosphorescent coating on hands and indices enabling visibility in darkness.

Radium-free glowing paint applied to watch hands and markers for low-light readability enhancement.

Indicator showing lunar month cycles, typically 29.5 days, advancing with gearing system.

Tendency of close-up photography to exaggerate case finishing details and dial complexity.

Omega's proprietary gold alloy designed to resist scratches and maintain its luster indefinitely.