Watch Glossary
1676 horological terms explained
Jewel on balance wheel that receives impulses from pallet fork escape wheel
Calibers designed and produced by watch brand, Omega 9300, Seiko 9R65, AP 3120 examples
Watch movement entirely developed and manufactured by the brand itself
Shock-absorption system using jeweled bearings to protect delicate balance staff from impacts.
Seconds mechanism independent from main movement allowing separate regulation and reset function.
Individual horologist or small atelier creating watches outside major manufacture houses
Minimalist hour markers using simple lines or shapes
Bilateral balance requirement of index regulator arms to prevent chronometric asymmetry.
Engineering technique removing mechanical play between index regulator components.
Mechanical resistance required to move index regulator arms during timing adjustment.
Total achievable rate correction span via index regulator adjustment before mechanical limits.
Numerical value representing resistance between the regulator pin and the hairspring lever.
Lag between index regulator movement command and actual hairspring length adjustment.
Rotational force required to move the timing lever from a fixed regulator pin position.
Critical measurement of the semicircular grooves on the regulator pin engagement surface.
Centered mechanical state of index regulator where hairspring length correction equals zero.
Thread specification controlling fine adjustment increments on index regulator mechanisms.
Examination of regulator pin surface abrasion to assess timing lever contact consistency.
Integrated multi-axis gyroscope and accelerometer for motion tracking applications
Patek Philippe's integrated bracelet design solid with rounded links
State of bezel insert markings, fading dramatically affects sports watch desirability and value
Bracelet design where the end links flow seamlessly from the lugs without separate attachment.
Review terminology for how bracelet curves and flows along wrist contours.
Chronograph components built into base movement, Zenith El Primero and Omega 9300 examples
Zenith measurement of how column wheel integration affects rotor moment calculations
Gear wheel engaged by setting lever to allow independent time adjustment
Advanced gem-setting technique where support structure remains hidden beneath gemstones.
International standard for diver's watches quality, water resistance, and safety requirements
Property where oscillation period remains constant regardless of amplitude or driving force variation
Vulcanized rubber strap with curved lugs, comfort-focused diving watch design