Maker, Edward John Dent, London, c. 1850 no. 860. Jeweled deadbeat escapement, Movement plates spotted and wheel train fully jeweled up to going barrel, with half-second, mercury compensated pendulum compensation. Fine beat adjustment above two prong crutch and vernier rate adjustment . Silvered brass dial. Movement: 18.5"h (47cm) x 6.5"w (16.5cm) x 6.5"d (16.5cm). With base and case: 23.5"h (60cm) x 7.75"w (19cm) x 7.75"d (19cm). This example was illustrated in British Skeleton Clocks, Derek Roberts, pp. 231, 234.