| 84 / | HD | MUSIC |
| 1 | DF | INSTRUMENTS {9} |
| 173 | DF | .~ Stringed {10} |
| 174 | DF | .~.~ Pianos {19} |
| 200 | | .~.~.~ Tuning devices {7} |
| 201 | DF | .~.~.~.~> Simple pin |
| 202 | DF | .~.~.~.~> Locking devices {1} |
| 204 | DF | .~.~.~.~> Worm gear |
| 205 | DF | .~.~.~.~> Direct pull |
| 206 | DF | .~.~.~.~> With push piece |
| 207 | DF | .~.~.~.~> With lever |
| 208 | DF | .~.~.~.~> Transverse pressure |