Features and Benefits:

• Pointed anvils measure scored and non-scored surfaces
  
• Built-in depth rod to check brake pad and shoe wear
  
• Deep measuring arms 3.25"
• Fractional graduations: 0.001" Metric: 0.01mm
  

This allows you to measure all brake rotors.  It has digital accuracy, which gives both inch and metric.  This comes packaged in a plastic blow-molded case for easy and safe storage.