page_title: Salisbury Cathedral clock
section_title: Going train
hierarchical_section_title: Salisbury Cathedral clock / Technical details / Going train
caption_attribution_description: Going train of the Salisbury cathedral clock.
context_page_description: The Salisbury Cathedral clock is a large iron-framed tower clock without a dial, in Salisbury Cathedral, England. Supposedly dating from about 1386, it is a well-preserved example of the earliest type of mechanical clock, called verge and foliot clocks, and is said to be the oldest working clock in the world, although similar claims are made for other clocks. Previously in a bell-tower which was demolished in 1790, the clock was restored to working condition in 1956 and is on display in the North nave aisle of the cathedral, close to the West front.
context_section_description: Great wheel to verge escape wheel: 100 to 10, verge escape wheel 45 teeth.
  The Great wheel turns once in 3600 seconds (1 hour), so the verge escape wheel turns once in 360 seconds. One full foliot swing thus takes 8 seconds, or 4 seconds per half swing.
  Seen from the going train side, the great wheel with the winding barrel turns anti-clockwise, and the escapement wheel turns clockwise.
caption: The going train of the clock
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