Review on 📏 High-Performance Digital Caliper Micrometer by Anytime Tools by Robert Pearson

More than accurate enough for the job it was designed for. It is not necessary to be more precise than a few hundredths of an inch on the rotor. If it really is that close to the minimum specs then put some new rotors on the car and move on. Holds up well. Mine is three years old now. Has a good weight, not like the $20 which is weak.