Component study collection
Reviewed close-ups of individual parts and small assemblies, captioned to distinguish isolated components, modern replacement parts and bearings photographed in situ. Every photograph retains its source and credit.
13 component records with reviewed close-ups · 32 in the atlas
Interactive parts diagram & quiz →Exact close-ups are still missing for 19 components. Turn off “Photographs only” to see their labelled schematic context. A schematic is not a photograph, and no generic watch or unrelated image is used to fill a gap.
13 component records shown
Going train & regulator
A centre wheel and its arbor in a repair close-up. The source discusses wear; this is not a pristine reference specimen or a guide to repairing it yourself.
harrishorology.com · Rights unverified — web image search result, review pending
Original photo reference →In a conventional centre-wheel train it turns once per hour; the cannon pinion couples it to the minute indication. Other train layouts exist.
Glossary definition →Article explanation →Going train & regulator
Lever escapement in situ: the pallet fork sits between the escape wheel and balance. Adjacent train wheels and ruby bearings are also visible; this is not an isolated fork.
Hustvedt · CC BY-SA 3.0
Original photo reference →Carries the pallets and communicates impulses to the balance through the roller jewel; it is not a continuously rotating wheel.
Glossary definition →Article explanation →Going train & regulator
A detached pocket-watch balance assembly with its spring visible. Different balances use different rim, screw and spring arrangements.
Chris Burks (Chetvorno) · Public domain
Original photo reference →Oscillates with the hairspring as the regulating system. Rate also depends on friction, amplitude, position and temperature.
Glossary definition →Article explanation →Going train & regulator
A manufacturer’s close-up of a flat hairspring with its balance assembly. This modern example does not describe every historical spring material or attachment.
miyotamovement.com · Rights unverified — web image search result, review pending
Original photo reference →Provides restoring torque to the balance. Distortion or contamination can change the rate; never touch it to test its resilience.
Glossary definition →Article explanation →Going train & regulator
Roller on the balance staff in a Rolex 1210 workshop record — impulse jewel visible; source describes scratching and deformation, not an undamaged reference specimen
Watch Guy workshop photo library; individual photographer not separately stated · Copyright workshop photograph — rights pending; permission not established; JPEG copy
Original photo reference →Carries the impulse jewel in a lever escapement; safety roller arrangements vary. Shown offset for identification, not in its real position on the staff.
Glossary definition →Article explanation →Going train & regulator
Ruby-coloured bearings visible in an assembled movement close-up. The photograph shows their positions, not a gemological test of their composition.
Hustvedt · CC BY-SA 3.0
Original photo reference →Ruby or sapphire bearings reduce wear at selected friction points. Historic jewels may be natural; later ones are commonly synthetic.
Glossary definition →Article explanation →Going train & regulator
Two small endstone/bearing-setting components in a workshop photograph. Keep the cap jewel distinct from a pierced hole jewel; this is a repair discussion, not servicing authority.
watchrepairtalk.com · Rights unverified — web image search result, review pending
Original photo reference →An endstone supports the end of a pivot and helps define its axial location; it is distinct from a pierced hole jewel. Shown detached.
Glossary definition →Article explanation →Going train & regulator
An Aurora pocket-watch plate offered as a separate component. Its seller attribution is retained rather than independently authenticated; construction is specific to this example.
ebay.com · Rights unverified — web image search result, review pending
Original photo reference →Provides the movement's principal structural base. The drawn boundary is a teaching outline, not a particular plate layout.
Glossary definition →Article explanation →Under the dial
Detached cannon pinion from a Seiko Bell-Matic 4006A workshop record — hollow shaft and pinion teeth; source captions this repair stage as cannon pinion tightened
Watch Guy workshop photo library; individual photographer not separately stated · Copyright workshop photograph — rights pending; permission not established; reduced-size JPEG copy
Original photo reference →Usually carries the minute hand and provides frictional coupling so the hands can be set without driving the whole going train backwards.
Glossary definition →Article explanation →Winding & setting
A separate winding stem in a supplier photograph, listed for FEF calibre 123. Length, thread and locating features must not be assumed interchangeable across movements.
watchmaterial.com · Rights unverified — web image search result, review pending
Original photo reference →Connects the external crown to the winding and setting system in a stem-wound watch.
Glossary definition →Article explanation →Winding & setting
Universal Genève 138SS keyless works with the sliding pinion on the stem — source reports a missing tooth; in-situ context, not an isolated pristine clutch wheel
Watch Guy workshop photo library; individual photographer not separately stated · Copyright workshop photograph — rights pending; permission not established; reduced-size JPEG copy
Original photo reference →Slides to engage the winding or hand-setting transmission in this common arrangement. Keyless constructions are not universal.
Glossary definition →Article explanation →Winding & setting
Rolex 2030 keyless-works close-up — yoke and sliding pinion in situ; source reports the yoke has slipped out of the pinion groove; workshop fault example
Watch Guy workshop photo library; individual photographer not separately stated · Copyright workshop photograph — rights pending; permission not established; reduced-size JPEG copy
Original photo reference →Positions the sliding clutch by engaging its groove; springs and selector geometry vary by calibre.
Glossary definition →Article explanation →Dial & case
A contemporary replacement hand set with open circular tips. ‘Breguet’ describes the style here, not manufacture by the historic firm or an antique provenance.
luciusatelier.com · Rights unverified — web image search result, review pending
Original photo reference →Hour and minute hands indicate time. Breguet-style hands are a particular design, not proof of maker or age.
Glossary definition →Article explanation →