Turret clock (verge and foliot, striking train, no dial originally) · England
Salisbury Cathedral Clock
Partially verifiedFrequently cited as one of the oldest working clock mechanisms in the world still substantially in its original form, though 'oldest' claims of this kind are always comparative and depend on how much of the mechanism is original fabric versus later restoration.
Technical facts
- Escapement
- Verge and foliot
- Function
- Striking the hour on the cathedral bell; no dial in its original arrangement
- Drive
- Weight-driven
Historical significance
- Frequently cited as one of the oldest working clock mechanisms in the world still substantially in its original form, though 'oldest' claims of this kind are always comparative and depend on how much of the mechanism is original fabric versus later restoration.
- Represents the earliest surviving type of mechanical clock escapement, the verge and foliot, before the pendulum.
- Was restored in the twentieth century after a period of disuse; researchers should treat the proportion of original medieval material versus restored/replacement parts as a distinct research question from the clock's overall date.
Photographs

Photographs are illustrative examples of the type, not necessarily the exact object described. Verify details against the source file page.
Sources & references
- Salisbury Cathedral, published visitor and conservation information
- Antiquarian Horological Society, discussion of dating claims for early English turret clocks
Where sources disagree, the disagreement is stated rather than resolved silently.