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Cristofori’s action in its final form

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Cristofori’s action in its final form.png Arrangement of iron plate, braces and scale of parlor size grand pianoforteThumbnailsGirl arranging pussy willowsArrangement of iron plate, braces and scale of parlor size grand pianoforteThumbnailsGirl arranging pussy willowsArrangement of iron plate, braces and scale of parlor size grand pianoforteThumbnailsGirl arranging pussy willowsArrangement of iron plate, braces and scale of parlor size grand pianoforteThumbnailsGirl arranging pussy willowsArrangement of iron plate, braces and scale of parlor size grand pianoforteThumbnailsGirl arranging pussy willows

 1. Key.
 2. Jack.
 3. Jack-operating spring.
 4. Cushion limiting rebound of jack.
 5. Under-hammer.
 6. Hammer-butt.
 7. Hinge of hammer-butt.
 8. Hammer-shank.
 9. Hammer head.

10. Check.
11. Damper-lifter.
12. Damper-head.
13. Action-beam.
14. Wrest-plank.
15. Tuning pins.
16. Bearing-bridge.
17. String.