| 374 / | HD | THERMAL MEASURING AND TESTING |
| 100 | DF | TEMPERATURE MEASUREMENT (E.G., THERMOMETER) {13} |
| 187 | DF | .~ Mechanical (e.g., expansion or contraction of materials) {10} |
| 205 | DF | .~.~ Compound sensing element (e.g., bimetallic) {1} |
| 206 | DF | .~.~.~ Coil {1} |
| 207 | | .~.~.~.~ Helix |