ASME Basic Calibration Block 1 is used for establishment of primary reference responses for UT examination of welds. ASME Basic Calibration Block 1 contains three side-drilled holes at 38mm deep minimum at 2.5mm diameter. The hole locations through the thickness are 1/4, 1/2 and 3/4 T. it also contains 2 EDM notches measuring 2% T deep * 6.4mm max wide * 25 long min. In accordance with ASME Sec V T-434.2.1

Dimensions:200mm*20mm*20mm
Engineering plastics storage cases
Net weight: 0.2kg
Gross weight: about 1.1kg