• Measures drum wear to ensure it is within manufacturer’s tolerance.• Also aids quick set-up of shoe/drum clearance prior to re-installation of drum.• Measures drums from 165 to 292mm (6-1/2" to 11-1/2").• Dual Imperial and Metric scale.• Knurled locking action.Measures drum wear to ensure it is within manufacturer’s tolerance. Also aids quick set-up of shoe/drum clearance prior to re-installation of drum. Measures drums from 165 to 292mm (6-1/2" to 11-1/2"). Dual Imperial and Metric scale. Knurled locking action.• Measures drum wear to ensure it is within manufacturer’s tolerance. • Aids quick set-up of shoe/drum clearance prior to re-installation of drum. • Measures drums from 165 to 292mm(6-1/2" to 11-1/2"). • Dual Imperial and Metric scale. • Knurled locking action. • Model No. VS040Technical Specification:Nett Weight: 0.51kgDimensions: Length: 22mm x Height: 249mmWeight: 0.635KgWarranty: 1 year