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4961
Pocket chronometer, with cross-detent escapement invented by James Peto. Peto, a pupil of Earnshaw's who later worked for Brockbank, evolved the escapement in an attempt to combine the better points of both Earnshaw's and Arnold's designs. 3-arm compensated balance with flat steel spring. Watch paper of P Kreutz, Hoxton. Casemaker's initials TG.
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Object details
| ID: | ZAA0022 |
|---|---|
| Collection: | Timekeeping |
| Type: | Pocket chronometer |
| Display location: | Not on display |
| Creator: | Brockbank, John; J. & M. Brockbanks |
| Date made: | circa 1795 |
| Exhibition: | Time and Longitude |
| Credit: | National Maritime Museum, Greenwich, London, Caird Collection |
| Measurements: | Overall: 84 x 56 x 23 mm |