Practical lessons on the lever escapement
Subtitle: its tests, errors, their detection and correction
By: by T. J. Wilkinson.
Publisher: Technical publishing company
Published: 1916
Place of publication: Philadelphia, Penna
Language: eng
Number of pages: 241
Subjects: Clocks and watches -- Escapements
Notes: "A part of this volume recently appeared in the columns of the Jewelers' circular."--Introd.
"To the watchmaker": 1 leaf laid in.