robroy:
I love my knob.
Had the same one since the 80s, wouldn’t be without it.
It’s been on numerous different trucks over the years .
You don’t see so many these days, but each to his own, I got one and just got used to it.
Great these days as I have dodgy upper arm tendons, so it’s especially handy when reversing.
My upper arm tendons are OK.
Ive been driving without a steering knob since the 70s… 
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No it isn`t proof 