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apparatus on a spinning preparation machine for, for example, a carda carda flat, a roller, a bar of iron, a car pettinatrice or similar, to determine the mass and / or fluctuations in the mass of a fibrous material, for example
apparatus on a spinning preparation machine for, for example, a carda carda flat, a roller, a bar of iron, a car pettinatrice or similar, to determine the mass and / or fluctuations in the mass of a fibrous material, for example