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Porte-crayons are a primitive type of leadholder, although I do not believe they were ever used for precise drafting as such. Early examples can be found from the 18th century but they are still available and used by artists to hold charcoal.
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purpose lead diameter mechanism composition variations production date origin |
sketching apprx. 3 to 6 mm slide lock clutch brass none circa 1800 unknown (possibly France) |
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purpose lead diameter mechanism composition variations production date origin |
sketching apprx. 5 to 6 mm slide lock clutch brass none 1990s unknown (purchased in USA) |
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purpose lead diameter mechanism composition variations production date origin |
sketching apprx. 3 to 4 mm slide lock clutch brass none (1960s) unknown (purchased in USA) |
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