I use a magnetic base dial indicator and a heavy iron vise.
The vice sits in the floor, and wont move easily since its 30 lbs.
I then stick the magnetic base to the vise and orient the indicator to the rotor.
In the photo, I am checking tire run out, because the car had a shimmy in the steering.
Tire was 1/4” out of round.
So, you get the idea ..
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