Rotring Rapidograph Technical Pen
Rapidograph is a drawing pen by Rotring that produces parallel line widths from 0.10mm to 0.80mm with the convenience of Rotring's unique capillary cartridges.
Rapidograph uses rotring's unique capillary cartridge and guarantees top reliability.
Pressure-equalization system including ink helix to get a clean new ink helix every time you change the cartridge.
Thin stainless steel nib for the highest precision ever and a very long usage.
To use on a variety of surfaces such as lineboard, tracing paper or vellum drawing paper.