Multiliner

Multiliner is a term used for a family of fine-line pens designed for technical drawing, illustration, and inking. The defining feature of many Multiliner pen systems is a set of interchangeable nibs or tips that deliver a range of line widths while maintaining consistent ink flow. This enables users to switch from very fine lines for details to broader strokes for emphasis without changing pens.

Construction and ink types vary by model, but typical Multiliner pens have a sturdy body, a refillable ink system, and replaceable metal or durable nylon nibs. Inks are commonly pigment-based, offering archival quality with properties such as lightfastness and longevity. Some variants are waterproof or water-resistant once dry, while others may be reworked with additional layers or solvents. The exact behavior of ink with water or markers depends on the specific formulation and brand.

Line width options in Multiliner lines commonly range from about 0.05 mm up to 0.8 mm or larger, with finer nibs favored for technical accuracy and cross-hatching, and broader nibs used for bold outlines or lettering. Many models provide consistent ink flow and precise line rendering, making them suitable for precision work on standard drawing papers, sketchbooks, and comics panels.

Use cases include architectural drafting, product design sketches, architectural diagrams, architectural plans, architectural or engineering annotations, comic book inking, and general illustration. They are valued for predictable line quality, archival ink, and the ability to maintain consistent strokes across multiple passes.

Notable manufacturers associated with Multiliner products include Rotring, Staedtler, and Kuretake, among others. As with any fine-liner, care includes replacing worn nibs, storing with caps on, and avoiding excessive pressure to extend nib life. See also fineliner, technical pen, archival ink.