JC Higgins Speedometer????

[Monarky]

I picked this up awhile ago just the way you see it and I'm not sure if I am missing a few washers and a bushing?. I know the speedometer mounts to goose neck but how does it mount to the wheel? Please see the attached picture and let me know what I maybe missing? Thanks Monarky

 

[halfatruck]

here are the instructions....