All of our weathervanes come complete with a vertical fixing bracket but in some positions you may need an additional bracket, for example, if you need to clear an overhang or fix to a horizontal surface. This bracket connects to a horizontal surface (under tiles) and the weathervane pole connects from the weathervane to the fixed bracket. If this weathervane accessory or any of the others are not suitable, we can look to help make a bespoke weathervane fixing.   The measurements of the round base are - 8.5CM in diameter.