| 702 / | HD | DATA PROCESSING: MEASURING, CALIBRATING, OR TESTING |
| 1 | DF | MEASUREMENT SYSTEM IN A SPECIFIC ENVIRONMENT {6} |
| 33 | DF | .~ Mechanical measurement system {6} |
| 35 | DF | .~.~ Flaw or defect detection {4} |
| 40 | ![]() | .~.~.~ Radiant energy (e.g., X-ray, infrared, laser) |