I love the original design of the original Gear clock by dominofreak, but I kept misreading it because the rotation was, in my mind reversed.

By adding a second sprocket, I have created a clock that turns in an anticlockwise direction, but the numbers read more naturally.

I also redesigned the big sprocket (the one with the numbers on it) to be just 1 item.

The downside is that you need to use a high-torque clock movement, such as one found here: http://www.jknowles.com.au/shop/High-Torque-Movement.html. I found the normal movements just didn't have enough ooof for reliability.

Finally to stop the numbers catching on the Wall bracket, I used a small amount of heat to slightly bend the arms of the wall bracket back a small way. Its not really noticeable.