Barwise, London, Movement No. 4184, 62 mm, 221 g, circa 1846

A heavy, large pocket chronometer with spring detent escapement
Case: silver, tiered, polished, engraved monogram. Dial: enamel, radial Roman hours, auxiliary seconds, numbered, signed, blued spade hands. Movm.: full plate movement, keywind, firegilt, signed, chain/fusee, bimetallic chronometer balance (24 mm) with 4 dimension limiting screws, blued freesprung helical balance spring, chatoned diamond endstone on balance.

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