BS 4331-3:1974(1999) Methods for Assessing the performance characteristics of ultrasonic flaw detection equipment — Part 3 : Guidance on the in - service monitoring of probes (excluding immersion probes)
2010BS EN 12668-2:2010 Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Probes
2001BS EN 12668-2:2001 Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Probes
1974BS 4331-3:1974 Methods for assessing the performance characteristics of ultrasonic flaw detection equipment. Guidance on the in-service monitoring of probes (excluding immersion probes)