An iron process largely used for reproducing technical drawings; produces an image in black. The image is developed out with gallic acid and is fixed by washing in water.
AAT
3000133379
black-line process
blackline process
ferro-gallic process
ferro-tannic
ferrogallic
ink process
13yrs ago
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The Fitzwilliam Museum (2024) "Terminology definition for: ferrogallic process" Web page available at: https://collection.beta.fitz.ms/id/terminology/term-29295 Accessed: 2024-11-15 09:15:04
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