As far as I know , it is 1:1.
The pictures show what it came packaged with and how it is constructed. the steel slug in the breakdown shot is there to add 'heft'.
The steering wheel is for Rfactor and it is easier to leave it more or less permanently installed. My joystick is on the otherside of the wheel. I'll have to do some rearranging if I ever get a HOTAS Warthog