The JET Tools JERG-1WO digital rotor gauge is a stainless steel measuring tool for professional use. It measures the thickness of disc brake rotors while the wheels remain fitted, eliminating wheel removal for this measurement. The gauge covers a range of 0 - 4" (0 - 100 mm), with increments of 0.0005" / 0.01 mm. A custom plastic case is included.

• Wheel-on digital gauge for disc brake rotor thickness measurement.
• Stainless steel construction.
• Measurement range: 0 - 4" (0 - 100 mm).
• Measurement increments: 0.0005" / 0.01 mm.
• Supplied with a custom plastic case.
• Model: JERG-1WO; SKU: SUW-310603; product number: 310603.