... 0-300mm/0-12"(customized range can be met)Materail: high quality carbon steel or stainless steelSurface Treatment: the whole rod body ... : 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-free,nickle-freeOED ...