首页 / 官方藏书 / The Modern Clock / A Study of Time Keeping Mechanism; Its Construction, Regulation and Repair / CHAPTER XII. THE CYLINDER ESCAPEMENT AS APPLIED TO CLOCKS.
首页 / 官方藏书 / The Modern Clock / A Study of Time Keeping Mechanism; Its Construction, Regulation and Repair / CHAPTER XII. THE CYLINDER ESCAPEMENT AS APPLIED TO CLOCKS.