| Author's List |
| title | creator | language | description | tableOfContents | contributor | subject | created |
| An Analysis of the Lever Escapement | Playtner, H. R. | en | 2007-06-30 | ||||
| Watch and Clock Escapements A Complete Study in Theory and Practice of the Lever, Cylinder and Chronometer Escapements, Together with a Brief Account of the Origin and Evolution of the Escapement in Horology | Anonymous | en | 2005-11-06 |