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