Brass mainspring winder set for hand-winding barrel arbors and letting down mainsprings on a wide range of common movements.
⭐ At a glance
✅ Fits: 2000, 2671, 2235, 8200, 8500-1, 8500-2, 3135/2824, C07111, 7750, 2892/2836 movements
📦 Includes fixed base, 10 hand cranks and storage box
✔️ Condition: New with tags
Material: Brass
🔧 What it does & how to use
This tool lets you safely wind and let down mainsprings by hand, without a mainspring winder machine — useful for watchmakers and hobbyists servicing barrels on the listed calibres. Each hand crank is marked with the movement it fits, so you match the correct crank to the barrel before use.
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Select the crank: Choose the hand crank marked for your movement (e.g. 7750, 2892/2836, 3135/2824, etc).
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Seat the barrel: Place the mainspring barrel onto the fixed base, aligning the arbor with the crank.
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Wind or let down: Turn the crank by hand to wind the mainspring into the barrel, or to let down tension safely before servicing.
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Store safely: Return the winder, base and cranks to the bamboo storage box after use.
