Mid-19th Century small-size brass bound mahogany two-day marine chronometer, signed Richard Hornby, Liverpool, No 265. Chain fusee movement with maintaining power, diamond endstones for the balance wheel, freesprung blued steel helical spring with terminal curve, Earnshaw type detent escapement, cut and compensated bimetallic balance wheel, signed and numbered silvered dial with two subsidiaries: state of wind in 3 hour divisions up to 54 hours; and running seconds. Heavy beveled convex glass, gimbaled bowl, mahogany case with brass mounted corners.
Dimensions of the box: 5.9 x 5.9 x 5.9 in – Dial diameter: 3.5 in. - (15 x 15 x 15 cm – Dial Diameter : 9 cm)
(1810-1872), established in New Scotland Rd, then 42 School Lane (1810-1834) the 36 South Castle St (1839-1872), Liverpool. Used mostly steel balance and Guillaume balance springs with Pooles Auxilliary. He was making his own adjustable spring detent. One of a great clockmaking family, he was a watch and chronometer manufacturer, chronometer maker to the Lords of the Admiralty. From 1851, his title was Hornby, Richard and Sons.
Tony Mercer, Chronometer Makers of the World, 1991, revised 2004; and Jonathan Betts at the National Maritime Museum.
The Ledger of Receipts and Issues of Chronometers reveals that this chronometer was one of a batch sold off to the Indian Government in 1894.
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