tania30
1 Answer
Daisy!
to lower static coefficient of friction. called jewel bearing.
start in 1704.
In 1902 synthetic jewels were used, usually Sapphire and rubies.
This watch can be rebuilt, any part of it can be repaired. It can last forever, generations.
Watches made before 1902 are highly prized, they contain the real jewel, there is no difference in price of a sapphire or a ruby watch.
| 14 years ago. Rating: 4 | |
Related Questions In This Category
Karma 
Top contributors in Books & Authors category
Unanswered Questions
888bxin
Answers: 0
Views: 10
Rating: 0
Mega888
Answers: 0
Views: 10
Rating: 0
Mega888
Answers: 0
Views: 12
Rating: 0
Mega888
Answers: 0
Views: 12
Rating: 0
Một chiếc mũ lưỡi trai có thiết kế riêng sẽ giúp hình ảnh trở nên nổi bật và chuyên nghiệp hơn trong các hoạt động quảng bá. Tham khảo thêm các mẫu thiết kế theo yêu cầu tại đây: https://nontam.com/dat-mu-luoi-trai-theo-yeu-cau #muluoitraitheoyeucau #maynon #nontam
Answers: 0
Views: 10
Rating: 0
OK365
Answers: 0
Views: 12
Rating: 0
Palmriver
Answers: 0
Views: 14
Rating: 0
789K
> More questions...
Answers: 0
Views: 12
Rating: 0