The Book is a research in Georges-Frederic Roskopf and his work, a man whose invention has created wealth to hundreds of factories in Switzerland. These factories grown to many of Switzerland largest during 100 years (even in number of most exported movements) as a result of his invention and gave thousands and thousands of people work. He or his relatives didnt get any fruits of his work and the fortunes it created. Many factories have improved the watches from time to time and many have benefited from Roskopfs idea and bungled it by producing inferior watches in the name of competition and profit. The serious manufacturers had realised the use of his invention and with advantage took the watch in their assortment. The Book is a late homage to Roskopf for his farsighted idea and philanthropy and his contribution to the watch history is worth all esteem. Read it!