Any help with 747 throttles please

Ok so after a few years of using a regular joystick for FSX I have decided to build my own. I want to build a 747 quadrant that is non motorized. I have done a lot of searching online and found a lot of parts and good advice but I have not been able to find much in the way of dimensions for the throttle levers. I found the following pics and I think they will help a lot but I need more drawings with dimensions of the actual levers. Also any advice from people who have undertaken this task would help. I have a CH Products throttle quad that I am planning to use for the levers and will use pots for the reverse levers. I got the idea from the site in the link. Thanks for any help.