2/3mm, indicating that the brake pads must be replaced. 8/10/12mm, indicating good condition, no need to replace.
Wear Meter Feeler Gauge Brake Pad Measuring Tool Brake Lining Thickness Gauge
NEW 32X Feeler Gauge Dual Reading Combination Feeler Gauge Metric
NEW 32 X Feeler Gauge Dual Reading Combination Feeler Gauge Metric
NEW 32 X Feeler Gauge Dual Reading Combination Feeler Gauge Metric UK