Watch Glossary
1104 horological terms explained · 2/2
Measurement between the inner edges of the lugs, determining strap and bracelet fit on the wrist.
Projections on the case that hold the strap or bracelet.
Design architecture integrating traditional watch complications with electronic displays
Protective crown housing exceeding standard military specifications to prevent accidental winding.
Enhanced case sealing technology required by MIL-W specifications achieving 300m+ water resistance.
Single-piece case construction where the entire case is machined from one solid block of material.
Case lug design allowing rapid field replacement of watch band using standard NATO strap system.
Eight-sided case shape providing a geometric, distinctive appearance with flat edges and corners.
Case finish with a mirror-like reflective surface achieved through grinding and buffing.
Buttons on the case side used to operate chronographs and other functions.
Seals around chronograph pushers to maintain water resistance.
Four-sided case with right angles and straight edges, elongated horizontally or vertically.
Case design sealing crystal, case, and back for exceptional water resistance.
Bezel that rotates in one or both directions for timing purposes.
Case design with applied dial elements creating a layered appearance, often seen in military watches.
Caseback sealed with threads that screw onto the case middle, improving water resistance.
Crown that screws onto the case threads for enhanced water resistance.
Chronograph button secured with a screw for enhanced durability.
Engraved caseback featuring broad arrow, service number, issuance year, and soldier identification.
Rotating bezel on military-issue watches typically featuring elapsed-time scale for field operations.
Case construction where the caseband is machined entirely from solid metal, no hollow sections.
Case design featuring distinct stepped or tiered levels on the sides, creating dimensional appearance.
Scale on bezel used to measure speed based on distance traveled.
Rectangular case design inspired by military tanks, featuring distinctive curved sides and lugs.
Case construction with separate middle, caseback, and crystal components assembled together.
Barrel-shaped case wider at the center and tapered at the lugs, resembling a wine barrel.
Three gasket seals providing maximum water protection on diver's watches.
Case design consisting of a case middle and caseback, with the crystal fitted into the middle.
Bezel rotating only counterclockwise to prevent accidental advancement.
Case's ability to withstand water exposure, measured in meters or ATM.