Britten, Frederick James On the Springing and Adjusting of Watches: Being a Description of the Balance Spring and the Compensation Balance With Directions for Applying the Spring and Adjusting for Isochronism and Temperature
![Britten, Frederick James On the Springing and Adjusting of Watches: Being a Description of the Balance Spring and the Compensation Balance With Directions for Applying the Spring and Adjusting for Isochronism and Temperature](https://r.kelkoo.com/resize.php?country=se&merchantId=100565793&categoryId=5101&trackingId=96964074&width=300&height=300&image=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F41%252BGp6XOu7L._SL500_.jpg&sign=mGCaX86fLQddQkYWmuKUmrSXfWTfwDr7tpa27rUz984-)
On the Springing and Adjusting of Watches: Being a Description of the Balance Spring and the Compensation Balance With Directions for Applying the Spring and Adjusting for Isochronism and Temperature