English chronometer with spring detent escapement Circa 1846

Large heavy silver pocket chronometer by John Barwise
–
A heavy, large English pocket chronometer with spring detent escapement, circa 1846.
Silver, tiered, polished case with engraved monogram. Signed, numbered enamel dial with radial Roman hours, auxiliary seconds, and blued spade hands. Full plate movement, keywind, fire gilt, signed, chain/fusee, bimetallic chronometer balance (24 mm) with four dimension limiting screws, blued freesprung helical balance spring, and chatoned diamond endstone on balance.
–
Diameter: 62 mm
–
Weight: 221 g
–
Signed: Barwise, London
–
Barwise Watchmaking family
A well-known dynasty of watchmakers, descendent of Lott Barwise of Cockermouth (q.v.). John Barwise senior had his business in St Martins Lane and took his sons into partnership in 1819. John Barwise 1790-1843 John Barwise & Sons 1819-1823 John Barwise & Weston Barwise 1820-1842 John Barwise 1845-1875.