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From the manufacturer


About rOtring
Whenever a creative idea is born, a rOtring is never far away: in architects' offices, universities, schools, and artists' studios. The writing and drawing instruments with the red ring have winning technical precision and functionality. rOtring products were designed in the best possible shape for the task at hand, with no compromises. The feeling of putting an idea on paper with a rOtring inspires you to do your best.
rOtring Isograph Technical Drawing Pen
Designed for precision
The rOtring Isograph Technical Drawing Pen is a high precision technical pen designed to provide you with flawless lines. With its ergonomic barrel, the Isograph pen achieves an ideal weight balance, allowing you to work for long hours without discomfort or fatigue. The wear-resistant, hard chrome-plated thin tip is perfect for exquisite detail work in drawing, drafting and technical writing. No matter what you’re working on, the superior design and high quality construction of the Isograph pen enables you to be technically perfect, every time.
- Choose from 13 line widths with color-coded barrels for easy reference
- Refillable ink reservoir perfect for frequent users
- Uses high-density opaque, lightfast, fast-drying waterproof pigment ink (not included)
- Push-on sleeve for easy access to ink helix and fast cleaning
Technically perfect, every time
Achieve exquisite detail with a thin tip honed for technical precision. The Isograph’s wear-resistant, hard chrome-plated thin tip allows for the utmost in perfection, and the stainless steel construction ensures long lasting use.
Easy to refill ink reservoir
The Isograph pen is equipped with a refillable ink reservoir that is ideal for frequent drawers. Use high opacity, fast drying bottled inks to refill your Isograph pen with no fuss. The patented push-on sleeve allows for easy access to the ink helix and for fast cleaning, so you can focus on what matters.
Work with a pristine pen
Keep your Isograph pens in pristine condition with rOtring Cleaning Fluid for technical pens. The patented push-on sleeve allows for fast, easy cleaning of the ink helix. Whether you’re between uses or preparing to switch ink colors, ensure that your Isograph pen is as precise and functional as you need.

Color-Coded Barrels
Line widths are easy to read with color-coded barrels, so you can work faster and more precisely.
$32.30 $32.30
$ 16 .55 $16.55
$50.36 $50.36
$ 21 .59 $21.59
$93.77 $93.77
$ 41 .03 $41.03
$8.13 $8.13
$ 4 .31 $4.31
$34.51 $34.51
$ 18 .71 $18.71
$10.08 $10.08
$ 5 .03 $5.03
$34.52 $34.52
$ 17 .27 $17.27