It's time to install the scuttle vent and I realize I don't have the simple straight link between the door and the triangular bellcrank. Fortunately I have all the more complex parts and I can make this simple one. I'd prefer not to estimate dimensions. There are a lot of great posts that show me how to assemble the parts, but not the length. Center to center distance between the holes would be ideal. My guess is about 1.5".