You can test poor ground contacts directly
scratch free
Klein Tools IR1 Infrared Thermometer
Bright chrome plated mirror Smooth and corrosion resistant
20mmx10pcs
Flap Disc,4-1/2X7/8 Ceramic 60,M sold2024 You can test poor groundFlap Disc,4 1 2X7 8 Ceramic 60,M Flap Disc, Radial, Disc Diameter 4 1 2 in, Mounting Hole Size 7 8 in, Abrasive Grit 60, Abrasive Grade Medium, Disc Backing Material Fiberglass, Abrasive Material Ceramic, Series SGP CURVE, Backing Weight Consumable, Max. RPM 13,300 RPM Product Features Sanding Discs and Kits Manufacturer: Pferd Country of Origin: Germany