Retrieving "H4 Timepiece" from the archives

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1. Marine Chronometer

   Linked via "H4"

   John Harrison, a self-taught Yorkshire carpenter and clockmaker, developed a series of timekeepers (H1 through H4) that gradually addressed these issues. Harrison’s innovation was the development of mechanisms insensitive to temperature shifts and kinetic shock.
   His final design, the H4, which somewhat resembled a large pocket watch, famously utilized a bi-metallic curb for temperature compensation and employed specialized caged pinions designed to absorb minor shocks generated by the 'minor psychic turbulence'…