1. Key-rocker.
 2. Abstract.
 3. Abstract-lever.
 4. Flange.
 5. Action-rail.
 6. Wippen.
 7. Jack.
 8. Jack-spring.
 9. Check.
10. Check-wire.
11. Bridle-wire.

12. Tip of bridle-tape.
13. Bridle-tape.
14. Back-stop.
15. Regulating rail.
16. Regulating button.
17. Regulating screw.
18. Hammer-butt.
19. Hammer-shank.
20. Hammer-molding.
21. Hammer-head.
22. Hammer-rail.

23. Hammer-butt spring.
24. Hammer-spring rail.
25. Damper-spoon.
26. Damper-lifting rod.
27. Damper-lever.
28. Damper-lever spring.
29. Damper-wire.
30. Damper-block.
31. Damper-head.
32. String.
33. Continuous brass hammer-butt flange.