Stock E9/E3 420mm steering wheel "school bus wheel" total height/length

[Wladek]

Hello Gentlemens,
wanted to ask if someone here know the total height/length of the stock early e3/e9 420mm 3-spoke steering wheel, so called "bus wheel / school bus wheel".
Total height - measured from the front of the handle/grip to the end of the rear splines part of the hub, or simply steering wheel lying on the floor & measured to the top point.
I know that the late models stock e3/e9 4-spoke wheel is ca. 133mm total height, but have no idea about the early 420mm "bus wheel", never had one. I assume that it might be pretty close, but want to know exactly to find out the exact driving position.
Thank you!

 

[HB Chris]

I have 13.2 cm. Do the earlier plastic bus wheels not have the faux leather rim? My 73s have both had them, not the shiny plastic.

 

[Wladek]

I have 13.2 cm. Do the earlier plastic bus wheels not have the faux leather rim? My 73s have both had them, not the shiny plastic.

Thank you Chris!

p.s. I tooked that photo here from forum, just as reference.