After seeing some of the interesting clock builds we’ve featured recently ... While the multiple rotating rings might look complex from the front, the ingenious design behind the mechanism ...

After seeing some of the interesting clock builds we’ve featured recently ... While the multiple rotating rings might look complex from the front, the ingenious design behind the mechanism ...

The clock is known as a Postman's Alarm ... Germany was the heart of mechanical engineering during the 19th century. Comments are closed for this object What's this? Most of the content on ...