CE,SGS,ROHS can be met Dual-core Digital Vernier Caliper with IP54 Measuring Function: ID, OD, depth, Height, Step ... is now promotional! Welcome your inquiry!Dual-core Digital Vernier Caliper with IP54Division value/accuracy: +/-0.01mm(+/-0.0005")Measuring ... can be met)Materail: high quality carbon steel or stainless steelSurface Treatment: the whole rod body with heat treatment, measuring surface ...