Mainspring for West End secundus 12"
Height, diameter, thickness and length
📏 Mainspring dimensions
| GR no. | Height | Diameter | Thickness | Length | Type |
|---|---|---|---|---|---|
| 4539 | 1.60 mm | 10.5 mm | 0.12 mm | 360 mm | Hand-wound, normal end hook |
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 198.
🛒 Matching mainspring in our shop
🔄 Alternative mainsprings
Same height, diameter equal or slightly smaller. Please check yourself before ordering.
🔗 According to the catalogue, the same mainspring (GR 4539) also fits
❓ Frequently asked questions
Which mainspring fits the West End secundus 12"?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.60 × 10.5 × 0.12 × 360 mm (GR 4539, hand-wound, normal end hook).
Is this mainspring available in the shop?
An exact match is not in stock right now, but 1 similar mainsprings are possible alternatives.
Which other calibers use mainspring GR 4539?
According to the catalogue also in Bauer Ga 60.1, Bauer Ga 60.3, ETA 2382, ETA 2387 à 2389, Eterna 96 and 1 other calibers.
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