1Range and Resolution: The measurement range of the rotor digital caliper is 06in/0150mm. Its accuracy is 0.002in/0.05mm. The resolution is 0.0005in/0.01mm, 1/128in. 2Reading Units Convertion: Disc brake rotor micrometer can be converted among inch, millimeter and fraction units, switch freely according to your needs. 3Manual On Off: You can manual power off and on disc brake rotor caliper , effortless gliding action, hardened measurement surface, durable in use. 4Wide Application: Brake disc thickness measuring tool is designed for professional auto mechanics and heavy duty applications, widely used in home, industrial and automotive applications. 5Recommendation: Please note that for more accurate measurements, use a small piece of paper or card to clean the outer jaws before each use. Item Type:Disc Brake Rotor MicrometerMaterial: MetalUnit: Metric Imperial ReadingMeasurement Range: Approx. 0-6in/0-150mm; Reading in inch, mm, fractionResolution: Approx. 0.0005in/0.01mm, 1/128in; Accuracy: 0.002in/0.05mmDisplay: 1/2in x 1 1/2in (13mm x 38mm) LCDHigh Quality: Every Digital Meter is Thoroughly Tested Before It's Ready for SaleBattery Type: Button Battery,Built in a Battery (Comes with an Additional Companion Battery)Battery Type: LR44 1.5VBattery Capacity: 160mAhApplicable: Universal 1 x Disc Brake Rotor Micrometer1 x Screwdriver1 x Button Battery1 x Blow Molding Box