Brake and rotor tools feature stainless steel construction for professional use. The ideal way to measure disc brake rotor thickness. Both anvils are pointed to measure score depths. With data output interface 0.0005 inch/0.01 mm increments. Comes with custom plastic case four button control panel: power on/off switch (ON/OFF), zero setting at any position (SET), instant SAE/Metric conversion (mm/inch), data hold function (HOLD).