{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"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","author_name":"Theophilus Gribi","thumbnail_url":"https://www.ebooknetworking.net/books/114/729/big1147293872.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1147293872.html\">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</a>","width":400,"height":300}