Measure the distance between the undersides of the backing plate and the brake disc without removing the wheel, enabling quick onvehicle assessment of pad clearance. Ergonomic black handle made from ABS and a durable aluminum alloy measuring blade, designed for comfortable use and reduced risk of damage. Includes a 1.5 mm calibration check mark and is suitable for both internal and external brake pads, specifically for pads with normal 6 mm thick back plates. You will receive 1 piece of brake pad thickness gauge with a white scale on the black handle, making data easy to read at a glance. Use scenario 1: perform a fast clearance check on a vehicle with the wheel in place to determine if brake service is needed. Use scenario 2: during pad replacement (internal or external), verify that the pad back plate thickness is compatible with the gauge and confirm proper clearance for 6 mm back plates. Use scenario 3: in a or service setting, compare multiple brake pad types with 6 mm back plates to ensure correct fit and spacing before ordering replacements.