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What Is Double Roller? |
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Answer» Two discs MOUNTED on the balance staff: a larger DISC which holds the ROLLER jewel, and beneath it a smaller crescented disc which, along with the guard PIN on the pallet, provides the roller SAFETY function. Two discs mounted on the balance staff: a larger disc which holds the roller jewel, and beneath it a smaller crescented disc which, along with the guard pin on the pallet, provides the roller safety function. |
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