1851 Great Exhibition: Official Catalogue: Class X.: F. B. Adams and Sons
2. ADAMS, F. B., and SONS, 21 St. John's Square, Clerkenwell — Manufacturers.
No. 1. Gold open-face, double-back, cased watch; enamel dial, first class, full plate movement, lever escapement, capped, eight holes jewelled, and compensated balance, etc. This description of watch is used in the northern states of America.
No. 2. Similar watch, with gold dial. This is made at one-third the cost of Nos. 1, 3, or 8.
No. 3. Gold watch; enamel dial, first class, three- quarter plate movement, duplex escapement, 10 holes jewelled, compensated balance, etc.
No. 4. Watch like the preceding; three-quarter plate movement, lever escapement, five holes jewelled, and gold balance.
Nos. 5, 6, 7, 8. Gold watches; first class, three-quarter plate movement, lever escapement, full jewelled, compensated balance, etc.
Nos. 9, 10. Gold watches; gold dial, full plate movement, lever escapement, jewelled, plain balance (for ladies).
Nos. 11, 12. Gold watches; first class, three-quarter plate movements, lever escapement, eight holes jewelled, compensated balance, cases enamelled, and ornamented with diamonds.
No. 13. Gold watch; enamel dial, showing seconds from the centre, without additional train.
No. 14. Gold, engraved, double-back, hunter-cased watch; first class, three-quarter plate movement, duplex escapement, 12 holes jewelled, compensated balance. This description of watch is used in the East Indies, Persia, Spain, and South America.
No. 15. Silver, open face, double-back, cased watch; lever escapement, capped, and four holes jewelled.
No. 16. Silver hunter engine-turned watch, vertical escapement.
No. 17. Silver pair of case watch; vertical escapement.
Nos. 15, 16, and 17, are used by artizans and labourers.
No. 18. A three-quarter plate finished movement lever escapement; eight holes jewelled, gold balance. This description of movement is adopted for the purpose of obtaining a thin watch.
No. 19. A full plate finished movement, lever escapement, eight holes jewelled, compensation balance, etc.
No. 20. A finished movement, vertical escapement.
The same workmen, in their various branches, were employed upon No. 1, the largest, and No. 11, the smallest of these watches.
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