Rotring Isograph technical drawing pen 0.1 mm, refillable with chrome-plated tip

The rOtring Isograph 0.1 mm is a refillable technical drawing pen engineered to produce extremely fine, consistent lines for detailed drafting and illustration.

Built for designers, architects, engineers and illustrators who demand control at the smallest scale, the Isograph combines a hardened chrome-plated tip and stainless-steel nib with a refillable ink reservoir. The pen’s colour-coded barrel identifies the 0.1 mm line width at a glance, while the push-on sleeve and detachable helix make cleaning and maintenance straightforward. This model accepts high-density pigment inks (not included) so you can refill with lightfast, waterproof formulas for archival stability and crisp contrast.

How precise is the 0.1 mm Isograph for fine-detail work?

The 0.1 mm Isograph is designed to deliver a narrow, uniform stroke suitable for intricate technical drawings and detailed illustrations. Its hard chrome-plated tip resists wear, keeping line width consistent over long use. The stainless-steel nib supports steady ink flow without skidding on paper.

• Produces a true 0.1 mm line width for precise drafting.
• Hardened, chrome-plated tip resists abrasion for consistent strokes.
• Stainless-steel nib stabilises ink delivery on technical papers.

What makes refilling and cleaning the Isograph simple?

The Isograph uses a refillable ink reservoir that you access by removing the push-on sleeve and the helix assembly. This design allows thorough cleaning to prevent clogging and supports repeated refills from pigment ink bottles. The components are made to be disassembled quickly so maintenance fits a professional workflow.

• Push-on sleeve gives quick access to the ink helix for cleaning.
• Reservoir accepts high-density pigment inks from refill bottles.
• Detachable parts make flushing and drying straightforward.

Which ink types work best and is ink included?

Rotring recommends using high-density, pigment-based inks formulated for lightfastness and fast drying; these inks deliver sharp, opaque lines and strong adhesion on most drafting papers. Ink is not included with the pen, so choose a compatible rOtring or other pigment ink bottle in the colour and permanence you prefer. Avoid inks not intended for technical pens to prevent damage or clogging.

• Compatible with lightfast, waterproof pigment inks (sold separately).
• Ink not included — select a high-density formula for best results.
• Avoid non-pigment or DIY inks that can harm the reservoir or tip.

How durable is the Isograph for frequent use?

Manufactured for repeated professional use, the Isograph’s wear-resistant tip and stainless-steel nib sustain fine performance across many refills. The colour-coded barrel aids quick identification among a full set of different line widths, and the precision machining reduces wobble or play in the tip assembly. Regular cleaning extends service life and keeps output consistent.

• Wear-resistant chrome plating protects the thin tip from abrasion.
• Colour-coded barrels speed line-width selection in multi-pen sets.
• Refillable reservoir reduces disposables and supports long-term use.

Who is this for: The rOtring Isograph 0.1 mm is aimed at professionals and serious hobbyists who require extremely fine, stable lines—architects, technical illustrators, cartographers, engineers, and graphic designers. It’s ideal for anyone who prefers a refillable instrument with archival-quality pigment ink options and straightforward maintenance. Not intended for skin use, such as tattoos.