This fascinating look at precision time keeping in England is filled with over 700 photographs of historically significant regulators by some of the most well-known 18th and 19th century horologists: Shelton, Ellicott, Arnold, Cumming, Earnshaw, the Vulliamys, Reid, and Hardy. The development of the cases is also explored, from the early Georgian to classic Victorian styles. Concise, thorough text informs and engages the reader in the history of accurately measuring time.