Tread Depth Gauge, Product Type Tire Tread Gauge, Gauge Type Pencil, Material Brass, Overall Length 3 in, Tread Depth Calibration Increments 1/32 in, Tire Pressure Calibration Increments Not Applicable, Minimum Operating Air Pressure Not Applicable, Maximum Operating Air Pressure Not Applicable, Includes Pocket Clip, Features Measures Tread Left on Tire, Finish Chrome Plated