Historical
BS EN 12223:2000
Non-destructive testing. Ultrasonic examination. Specification for calibration block No.1 (British Standard)
This standard specifies requirements for the dimensions, material and manufacture of a steel block for calibrating ultrasonic flaw detection and inspection equipment used in manual testing. The calibration block dealt with in this standard is identified calibration block No.1 to distinguish it from other calibration blocks.
British Standards Institution [bsi]