This is the king-pin of the whole clock and therefore needs to be sturdy. All other parts are bolted to it. I decided to use software to draw the proposed framework so I could estimate what wood was needed. The drawing is shown on the right with early estimated dimensions. The available images on the internet were not sufficient to measure all the dimensions I wanted. So I contacted Jess at Guinness who offered to take some pictures of their 1/5 scale model. They very kindly sent me 10 high resolution pictures from various angles, from which I was able to take the relative dimensions I needed. One of those pictures I include lower down.