ASME-Compliant ERVW™ Line of Calibration Blocks

Jointly designed by PH Tool and Holloway NDT, the fully ASME-compliant ERVW™ Line of Calibration Blocks is an innovative development that has dramatically improved inspection efficiency. ERVW™ Blocks are carefully designed to make use of tolerance and allowances in ASME code to cover the maximum number of inspection sizes with just a few select blocks. Adding these blocks your kit will save a ton of weight and space vs. hauling dozens of individual cal blocks. The best part? - you'll never find yourself without that "one missing size" that you need for your next inspection, saving you from scrambling to have a new block made.

ERVW™ Blocks sets are available for pipe inspection in the axial direction, with an option for either side drilled holes or notches as the reflector type, as well as a separate set for pipe inspection in the circumferential direction. Additionally, the new ERVD™ thickness calibration block is useful for thickness testing of multiple curved surfaces.