Mainspring for Ronda 1216-21 Aut. Rosk

Height, diameter, thickness and length

1.40 × 9.5 × 0.11 × 340 mmheight × diameter × thickness × length

Note: We have transcribed this information to the best of our knowledge from the Générale Ressorts mainspring catalogue (GR 2, 1974). All information has been carefully checked but is provided without guarantee. Please check yourself before fitting that the mainspring fits, in particular height, diameter, thickness and length.

📏 Mainspring dimensions

GR no.	Height	Diameter	Thickness	Length	Type
3700-2X	1.40 mm	9.5 mm	0.11 mm	340 mm	Automatic, with welded slipping bridle, special version (2X)

All dimensions in millimetres. The height of a mainspring is often also called its “width”. Source: Générale Ressorts, mainspring catalogue GR 2 (March 1974), page 169.

🛒 Matching mainspring in our shop

According to the catalogue, this mainspring has a special form (Automatic, with welded slipping bridle, special version (2X)). We therefore do not show shop items automatically here – feel free to write to us. Contact form

❓ Frequently asked questions

Which mainspring fits the Ronda 1216-21 Aut. Rosk?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.40 × 9.5 × 0.11 × 340 mm (GR 3700-2X, automatic, with welded slipping bridle, special version (2X)).