Needles: Securing needles in polishing roll (1), polishing under lead weight (), washing (2) drying (3), inspecting (4), grinding points (7). Specific, monotonous task. Process virtually unchanged for nearly 200 years. From Diderot 'Encyclopedie' Paris

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Needles: Securing needles in polishing roll (1), polishing under lead weight (), washing (2) drying (3), inspecting (4), grinding points (7). Specific, monotonous task. Process virtually unchanged for nearly 200 years. From Diderot 'Encyclopedie' Paris

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