Practical Course in Adjusting: Comprising a Review of the Laws Governing the Motion of the Balance and Balance Spring in Watches and Chronometers, and ... of Variations of Rate Arising From Wan

Name: Practical Course in Adjusting: Comprising a Review of the Laws Governing the Motion of the Balance and Balance Spring in Watches and Chronometers, and ... of Variations of Rate Arising From Wan
ISBN: 9781332064052