ERVD™ Thickness Calibration Block

Used for Thickness Calibration on multiple pipe sizes. 

  • ERVD Inch

    ERVD™ Thickness Calibration Block, 1018 Steel

    The second addition to the Extended Range Variables (ERV™) product line, this Extended Range Variable Diameter (ERVD™) Thickness Calibration Block was jointly designed by PH Tool and Holloway NDT, intended for use as a versatile curved step...