Looks like 78mm across the bottom.
4 responses Add your response
From bottom to top of the footer base (which has a large threaded insert built into it is 22mm. The height of the outside portion of the footer is 15.8mm to the outside edge, there is a 45 degree bezel which leads to the next edge which is 17mm from the underside of the base of the footer, and from there to the edge of the thread in the center, there is a gentle rise covering 5mm. The table can be raised and lowered on the threads depending on what you want.