The concept of a time lock is an old one, and here you can see an example of the clockwork and gears version that kept vaults sealed against unauthorized openings. Even if the correct combination was ...
A folk culture exhibition about historical development of locks in China kicked off on Wednesday at the Zhoushan Museum in East China's Zhejiang Province. Ye Ling, the director of the museum's Display ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback