A marine chronometer is an instrument that is both precise – stays synchronised with an external standard time – and accurate – the frequency of its oscillator is stable over time. Moreover, its high efficiency must be achieved during navigation and across a varied range of temperatures and positions
A mechanical feat, this mechanism belongs to the exclusive family of astronomical movements. The equation of time represents the difference between solar time – which varies throughout the year as the earth nears or distances itself from the sun – and our 24-hours-per-day time, based on the worldwide consensus that every day should have the same duration.
Spring Detent with fusee-and-chain drive
Perpetual Calendar, Equation of Time, 3D Moon Phase
Diameter: 282 mm
Height: 137 mm