The 85mm silvered Roman and Arabic dial signed and numbered Parkinson & Frodsham, Change Alley, London No. 26..
Blued steel hands, subsidiary seconds and up-down dials, small size two day duration movement (56mm diameter),
the spot-finished top plate signed Parkinson & Frodsham Change Alley London, chain fusee with Earnshaw escapement,
cut bimetallic balance with wedge-shaped heat compensation weights, blued steel helical balance, brass casing with cushion
springs to the underside and within brass bowl and gimbal; three-tier mahogany box with external brass handles to the sides,
signed and numbered bone plaques to the front.
Sizes of the restored wooden box 165/165/155 mm.
The marine chronometer is working condition and keep good time.
The chronometer was made between 1840 and 1850.
The firm of Parkinson and Frodsham produced some of the finest chronometers many of which
went on some epic and historic journeys. William Parkinson of which little is known is believed
to have gone to London from Prescott. This is a place where he would have learnt the skills of
a watch/chronometer maker. William James Frodsham came from the well known family of horologists
and at the age of 23 years he went into partnership with Parkinson. Specialising in chronometers
both pocket and marine. They built a successful
business in Change Alley and Frodsham had ten children of whom six became watchmakers.