by Audi1 » Fri May 04, 2018 3:46 am
No, the indicator sits on the "floor" of the Razor, but the body is attached to the block that raises and lowers it. As you lower the block (sand more off the tires), the gauge will reflect the change. When you finish off one tire, you write down what the gauge says. Then you sand down the second (and any subsequent) tire(s) until the gauge says the same thing that it did with the first tire. The result is two (or more) tires that have the same diameter after being trued, which is important for chassis balance and traction performance.
Allan