The clock was made by Joseph Knibb in 1670 and installed in the college in 1671.Early English clocks. Percy G. Dawson, C.B. Drover, Daniel W. Parkes. Antique Collectors' Club. 1982 The clock face is still in its original location over the west door of the college chapel. The 1670 clock mechanism is now kept in the History of Science Museum, Oxford.
