Schematic of the Steinway Model M Grand Piano - Segment Three of Seven

| 74 - Nosebolt Nut | 80 - Bridge | 92B - Trapwork Washer | ||
| 77 - Hitch Pin | 81 - Soundboard | 101 - Brace | ||
| 78 - Duplex Scale | 82 - Ribs | 102 - Top | ||
| 79 - Bridge Pin | 92A - Trapwork Pivot Pin | 102A - Top Button |
