Movement by Thomas Tompion (English, 1639–1713)
Case: oak, veneered with oystershell-cut olivewood and marquetry panels of green-stained bone, ivory, and various woods, gilt-brass mounts; Dial: brass, partly gilded and partly silvered; Movement: brass and steel
77 x 17 x 19 in. (195.5 x 43.2 x 22.9 cm)
Bequest of Marilyn Preston Graves, 1998 (1999.48.2)
Tompion combined the technical advances made by English clockmakers with his own superb workmanship and ingenious designs to produce timepieces that contributed vastly to the fame of English clockmaking in the second half of the seventeenth century. The dial indicates hours and minutes subdivided into ten-second intervals (on the silvered chapter ring), calendrical information (in various apertures), and the phases, aspects, and age of the moon in its monthly cycle, as well as the times of high tide at London Bridge (on the central revolving disk). The eight-day weight-driven movement, with anchor escapement and long pendulum, strikes in an unusually complicated way: full and half hours are struck respectively on large and small vertically mounted bells, and the first and third quarters, once and twice respectively, as double blows on small, horizontally mounted bells.