I forgot the title of the book name but this is what helped me big time.

Many years after its first publication, the best-selling Watchmaking continues to inspire and encourage the art of watchmaking, especially among new generations of enthusiasts.

As a supreme master of his art, George Daniels' advice is constantly sought by both students and watch repairers, his understanding of the problems that can beset the would-be watchmaker, especially in an age of mass production, and his expert knowledge of the history of watchmaking being second to none.