Milton® Pencil Style Brake Pad Gauge allows you to quickly measure the external & internal brake pads to help identify if a vehicle has a sufficient amount of brake pad lining. Milton® pencil tire gauge is uniquely designed with an easy to use and readable color code scale Red = Replace, Yellow = Caution, Green = Safe. Manufactured from durable lightweight steel to ensure long term performance. Constructed to be compact and calibratable for portable ease. Reads from 0 - 20 mm. Milton provides the top line solutions to all pneumatic automotive service applications.