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The Encyclopedia of Horology

Marine timekeeper · England

Harrison H2

Verified

Harrison's second sea clock, more robust than H1, but he identified a flaw in the bar-balance arrangement under rotation and never sent it to sea.

Technical facts

Regulator
Linked bar balances
Materials
Mainly brass

Historical significance

  • Harrison's second sea clock, more robust than H1, but he identified a flaw in the bar-balance arrangement under rotation and never sent it to sea.

Related photographs

Replica of John Harrison's first marine timekeeper, by Herbert Davies, Emsworth, Hampshire, completed c. 1962 - Clockmakers' Museum - London, UK - DSC05428
Replica of John Harrison's first marine timekeeper, by Herbert Davies, Emsworth, Hampshire, completed c. 1962 - Clockmakers' Museum - London, UK - DSC05428 — Daderot, CC0. Wikimedia Commons file page

No confidently matched photograph of this subject has been found yet. These photographs show a closely related record, and are not examples of the type described on this page.

Sources & references

  1. Royal Museums Greenwich catalogue notes
  2. Betts, J., Harrison

Where sources disagree, the disagreement is stated rather than resolved silently.