General description Sealey Brake Drum Wear Gauge is designed to measure drum wear, ensuring it remains within the manufacturer’s tolerance. It also facilitates the quick setup of shoe/drum clearance prior to the re-installation of the drum. Technical specifications Model No.: VS040 Measures drum wear from 165 to 292mm (6-1/2" to 11-1/2") Dual Imperial and Metric scale Nett Weight: 0.51kg Other information