| 702 / | HD | DATA PROCESSING: MEASURING, CALIBRATING, OR TESTING | 
| 1 | DF | MEASUREMENT SYSTEM IN A SPECIFIC ENVIRONMENT {6} | 
| 33 | DF | .~ Mechanical measurement system {6} | 
| 41 |  | .~.~ Force or torque measurement {2} | 
| 42 | DF | .~.~.~> Stress or strain measurement {1} | 
| 44 | DF | .~.~.~> Mechanical work or power measurement |