The JET Tools JERG-1 Digital Rotor Gauge is a stainless steel measuring tool for professional disc brake rotor inspection. It measures rotor thickness, while its two pointed anvils allow score-depth measurement. A four-button panel provides power control, zero adjustment at any position, immediate switching between S.A.E. and metric units, and a hold function for readings. A data output interface and custom plastic case are also included.

• Model/SKU: SUW-310602; product number: 310602.
• Measurement range: 0–5" (0–125 mm).
• Measurement increments: 0.0005" / 0.01 mm.
• Stainless steel construction with two pointed measuring anvils.
• Control buttons: ON/OFF for power, SET for zero adjustment, MM/IN for unit conversion, and HOLD for retaining a reading.
• Equipped with a data output interface and supplied with a custom plastic case.