The Modern Clock Ward L. Goodrich Vintage hardcover book detailing commentary on aspects of 'modern' clock-making from a mid-20th century perspective. Includes sections on compensating pendulums, the peculiarities of angular measurement, a variety of escapements, and dozens of others, paired with useful black-and-white illustrations. 502 pages
North American Watch & Tool Company
1950, 1970
North American Watch Tool & Supply Company
Reference