The escapement and train of American watches
Subtitle: a practical and encyclopedic treatise and text book
By: by T. J. Wilkinson.
Edition: 2d ed.
Publisher: Keystone publishing co.
Published: 1928
Place of publication: Philadelphia, Penna
Language: eng
Number of pages: 378
Subjects: Clocks and watches.; Clocks and watches -- Escapements.
Notes: Part II was published, 1916, under title: Practical lessons on the lever escapement, its tests, errors, their detection and correction.