AM 280 (10.5'''), Balance staff, Ronda: 49
- Manufacturer Ronda no: 49
- Total length: 363
- Fits cal: 280, 281, 420, 421, 422, 423, 424, 425, 426, 427, 428, 430, 431, 432 (10.5''')
- A: = 363 (ronda A).
- B: = 171 (ronda B).
- F: = 58 (ronda K).
- G: = 79 (ronda J).
- H: = 45 (ronda G).
Conversion: Ronda to DCN
- A = A
- B = B
- J = G
- G = J
- K = F
