Watch and clock escapements
By: 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;
Publisher: The Keystone
Published: 1904
Place of publication: Philadelphia
Language: eng
Number of pages: 179
Work titles: Keystone. [from old catalog]
Notes: Also available in digital form on the Internet Archive Web site.