Preface -- Glossary and Abbreviations -- 1 Introduction -- 1.1 Outline -- 1.2 What is a Synchronous Clock? -- 1.3 Historical Background -- 1.4 AC Mains Supply -- 1.5 User Experience -- References -- Part I Main text -- 2 Manufacturers and Brands -- 2.1 Introduction -- 2.2 Brands -- 2.3 Manufacturers -- References -- 3 How a Synchronous Clock Works -- 3.1 Introduction -- 3.2 Synchronous Motors -- 3.3 Reduction Gear -- 3.4 Striking and Chiming Work -- 3.5 Synchronous Time Switches -- References -- 4 Synchronous Clock Cases -- 4.1 Introduction -- 4.2 Synchronous Clock Case Styles -- 5 Servicing of Synchronous Clocks -- 5.1 Introduction -- 5.2 Electrical Faults -- 5.3 Mechanical Faults -- 6 Analysis of Marketing and Reliability -- 6.1 Introduction -- 6.2 Analysis of Marketing -- 6.3 Analysis of Reliability -- 6.4 The Rise and Fall of a Technology -- Part II Galleries -- 7 Gallery of Synchronous Mantel Clocks -- 7.1 Introduction -- 7.2 Alexander Clark Clock -- 7.3 BEM Clock -- 7.4 Camerer Kuss & Co Clock -- 7.5 Clyde Clocks -- 7.6 Ediswan Clock -- 7.7 Elco Clocks -- 7.8 Empire Clock -- 7.9 Ferranti Clocks -- 7.10 Garrard Clocks -- 7.11 Genalex Clocks -- 7.12 Ingersoll Clocks -- 7.13 Liberty Clock -- 7.14 Marigold Clock -- 7.15 Metalair Clock -- 7.16 Metamec Clocks -- 7.17 Riley Clock -- 7.18 Smith Clock, Type 1 Striking Movement -- 7.19 Smith Clock, Westminster Chiming Movement -- 7.20 Smith Clocks, BM7 Movement -- 7.21 Smith Clocks, Bijou Movement -- 7.22 Smith Clock, QAT Movement -- 7.23 Smith Clocks, QEMG Movement -- 7.24 Synchronomains Clock -- 7.25 Temco Clocks, Mark I Movement -- 7.26 Temco Clocks, Mark IV Movement -- 7.27 Temco Clocks, Mark V Movement -- 7.28 Temco Clocks, Smith Movement -- 7.29 Conclusions -- 8 Gallery of Synchronous Bedside Clocks -- 8.1 Introduction -- 8.2 Bowden & Sons Clock -- 8.3 Elco Clock -- 8.4 Ferranti Clocks -- 8.5 Franco British Electrical Co Ltd Clock -- 8.6 GEC Clock -- 8.7 Genalex Clock -- 8.8 Goblin Clock -- 8.9 Kelnore Clock -- 8.10 Magneta Clock -- 8.11 Metamec Clocks -- 8.12 Smith Clocks, Type 1 Movement -- 8.13 Smith Clocks, BM7 Movement -- 8.14 Smith Clocks, Bijou Movement -- 8.15 Smith Clock, QGEM Movement -- 8.16 Sterling Clocks -- 8.17 Synchronomains Clock -- 8.18 Temco Clock, Mark II Movement -- 8.19 Temco Clocks, Mark IV Movement -- 8.20 Temco Clocks, Mark V Movement -- 8.21 Conclusions -- 9 Gallery of Synchronous Wall Clocks -- 9.1 Introduction -- 9.2 English Clock Systems Clock -- 9.3 Genalex Clock -- 9.4 Horstmann Time Switch -- 9.5 Magneta Clock -- 9.6 Metalair Clock -- 9.7 Metamec Clock -- 9.8 Smith Clock, Type 1 Movement -- 9.9 Smith Clock, BM7 Movement -- 9.10 Smith Clocks, BM39 Movement -- 9.11 Smith Clock, Heavy Motion Work Movement -- 9.12 Smith Clocks, Bijou Movement -- 9.13 Synchronome Clocks -- 9.14 Temco Clock, Mark V Movement -- 9.15 Westclox Clock -- 9.16 Conclusions -- 10 Gallery of Synchronous Granddaughter Clocks -- 10.1 Introduction -- 10.2 Ferranti Clock -- 10.3 Smith Clock, Type 1 Chiming Movement -- 10.4 Smith Clock, Type 1 Movement -- 10.5 Temco Clock, Mark IV Movement -- 10.6 Conclusions -- 11 Gallery of Synchronous Movements -- 11.1 Introduction -- 11.2 BEM Movement -- 11.3 Clyde Movement -- 11.4 Elco Movement -- 11.5 Empire Movements -- 11.6 Ferranti Movements -- 11.7 Garrard Movements -- 11.8 Goblin and Magneta Movements -- 11.9 Kelnore Movement -- 11.10 Marigold Movement -- 11.11 Metalair Movement -- 11.12 Metamec Movements -- 11.17 Sangamo Weston  Ltd Movement -- 11.13 Smith Movements -- 11.15 Temco Movements -- 11.16 Westclox Type No. BM25 Movement -- 11.17 Conclusions.