For tracing paper, vellum drawing paper and lineboard.The rapidograph uses rOtring's unique capillary cartridge. The pressure-equalization system, including ink helix is part of the ink cartridge which ensures that every time you change the cartridge, you get a clean new ink helix. This means that you never need to clean the ink helix and top reliability is guaranteed.
|Nib Size||0.18 mm|
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