Precision ultrasonic calibration block with a thickness of 12.5mm for reliable measurements. Features a 5mm hole diameter, designed for compatibility with various ultrasonic testing devices. For non-destructive testing (NDT) applications, ensuring accurate calibration and performance. Constructed from high-quality materials for durability and long-lasting use in industrial environments. Essential tool for professionals in engineering, manufacturing, and quality control sectors., Manufacturer: GQNBLVHZUPDM