A closeup look at a Master Clock made by ITR (now IBM) in 1928, restored and displayed to show off the materials, design and kinetic artistry of a master clock by International Time Machines. This weight driven clock uses an electric motor to rewind its weights, and originally had it's pendulum filled with mercury to make it one of the most accurate time keepers on the market for decades.
![](https://s2.save4k.ru/pic/gU1tJZL4sdg/maxresdefault.jpg)