CE,SGS,ROHS can be met Dual-core Digital Vernier Caliper with IP54 Measuring Function: ID, OD, depth, Height, ... speed: 1.5cm/secDouble shockproof design and adjustable zero position; high quality and large LCD display make it easy to readMeasuring Function ... : ID, OD, depth, Height, Step.Quality Control: CE,ROHS,SGS can be metEco-friendly, non-toxic, harmless, lead ...