A diversified collection of 2 table clocks, 1 ship's chronometer, 1 alarm clock and an air force deck watch
English, 400 mm, circa 1970
A reproduction of a spring driven rolling ball clock, one of a small series made to Sir William A. Congreve-Bart's basic design. The clock has separate dials for minutes, hours and seconds, the latter marked 0 - 30 and 30 - 60 to coincide with the 30 seconds table. Apertures at the end of each straight run show the seconds; switch-levers on each end of the see-saw keep the ball running.