---
product_id: 49955773
title: "Isograph Technical Drawing Pen | 0.35 mm | Refillable Fineliner Pen"
brand: "rotring"
price: "€ 53.10"
currency: EUR
in_stock: true
reviews_count: 13
category: "R Otring"
url: https://www.desertcart.pt/products/49955773-isograph-technical-drawing-pen-0-35-mm-refillable-fineliner-pen
store_origin: PT
region: Portugal
---

# Refillable ink reservoir for sustainability 0.35 mm ultra-fine precision tip Wear-resistant chrome-plated tip Isograph Technical Drawing Pen | 0.35 mm | Refillable Fineliner Pen

**Brand:** rotring
**Price:** € 53.10
**Availability:** ✅ In Stock

## Summary

> ✏️ Draw the future with precision and purpose.

## Quick Answers

- **What is this?** Isograph Technical Drawing Pen | 0.35 mm | Refillable Fineliner Pen by rotring
- **How much does it cost?** € 53.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/49955773-isograph-technical-drawing-pen-0-35-mm-refillable-fineliner-pen)

## Best For

- rotring enthusiasts

## Why This Product

- Trusted rotring brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Hard chrome-plated, wear-resistant tip ensures drip-free, consistent ink flow without blobbing or clogging.
- • **Ink Level Transparency:** Clear reservoir window lets you monitor ink levels in real-time—never get caught off guard mid-project.
- • **Sustainable Creativity:** Refillable ink reservoir reduces waste and keeps your pen flowing longer—eco-friendly and cost-effective.
- • **Pinpoint Precision Every Time:** Achieve flawless, ultra-fine 0.35 mm lines for your most detailed technical drawings and designs.
- • **Versatile Surface Compatibility:** Perfectly engineered for line board, tracing paper, vellum, and more—your go-to pen for every professional medium.

## Overview

The rOtring Isograph Technical Drawing Pen 0.35 mm combines ultra-fine precision with a durable, refillable design. Featuring a hard chrome-plated tip that resists wear and prevents ink blobbing, it delivers consistent, flawless lines on a variety of professional surfaces. Its transparent ink reservoir ensures you stay ahead of your workflow, making it the sustainable choice for architects, designers, and artists who demand reliability and excellence.

## Description

From the manufacturer rOtring Isograph Technical Drawing Pen 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. 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. 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.

Review: Reliable. ink flow joy. Refillable and sustainable. Zero waste. - This is a great pen. It draws smoothly and reliably. Takes India Ink which is waterproof and permanent. Way cheaper and sustainable to use a refillable pen than keep buying disposable pens. I bought a 250ml bottle of ink; way cheaper than the tiny ones. The steel nib will last forever. I use it most days. But if I leave it for a while, a good shake and the ink flows like a dream. I had been using cheaper brands, which were fine for a while, and then clogged and stopped working, even after extensive cleaning and faffing about. Grrr factor 10/10 after several months of use. As an artist and not a technical draughtsperson, I really rate these pens. Mine is a 0.6 nib. Can't vouch for the reliability of the finer nibs. However, it is too easy to over-tighten the grey nib holding section against the handle / barrel. Mine has a hairline crack, allowing the barrel to rotate a bit and be annoying. But it does not affect the drawing function, or ink flow, just the handling of the barrel. Still useable, but would like a better quality plastic at that point in the design. I have not been heavy handed with it. It was just a bit weak there on the thread. Having said which, it is far superior to the cheaper brands. I wasted money buying several cheapos, thinking I had simply bought a rogue pen initially. Not so. The working parts were just not as good as Rotring. Invest in the best.
Review: My favourites! - These are my favourite pens! Such fine lines although they can be bothersome to clean. I use these for drawing rather than writing and the quality is impeccable. They are on the more expensive side but nowhere else can I get such consistently fine lines. I like that they are refillable (the isographs so much more so than the rapidographs). For good consistent flow without having to clean them, these pens need to be used regularly. Weeks without using them can lead to splotchy lines or blocked pens.

## Features

- High precision 0.35 mm pen with refillable ink reservoir for drawing
- The hard chrome-plated thin tip produces exquisite, detailed work
- The wear-resistant tip prevents dripping and blobbing
- Designed so that ink level is clearly visible, so you know when it's time to replace the ink
- Ideal for use on a variety of surfaces including line board, tracing paper and vellum drawing paper

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0007OEB1I |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Artistic Charcoal Form | Compressed Charcoal |
| Best Sellers Rank | 14,953 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 5 in Technical Pens |
| Body Shape | Cylindrical |
| Brand | rOtring |
| Brand Name | rOtring |
| Closure Type | Retractable |
| Colour | Black |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.3 out of 5 stars 1,345 Reviews |
| Drill Point | Fine |
| Global Trade Identification Number | 03501179034003, 04006856151077 |
| Grip Type | Ribbed |
| Hardness | H |
| Included Components | Pen |
| Ink Base | Hybrid |
| Ink Colour | Black |
| Ink colour | Black |
| Is the Product Left or Right Handed? | Ambidextrous |
| Item Diameter | 1.3 Centimetres |
| Item Dimensions | 14.2 x 4 x 2.2 centimetres |
| Item Weight | 19 g |
| Line Size | 0_3mm |
| Manufacturer | Newell Rubbermaid |
| Material | Plastic |
| Material Type | Plastic |
| Model Name | Isograph |
| Model Number | 1903400 |
| Pattern | Letter Print |
| Recommended Uses For Product | Drawing |
| Special Features | Refillable |
| Style | 0.35 mm |
| Subject Character | B0007OEB1I |
| Theme | Technical Drawing" or "Art |
| UPC | 711668889394 |
| Unit Count | 1.0 count |
| Water Resistance Level | Water Resistant |
| Writing Instrument Form | Technical Pen |
| Writing Technique | technical pen |
| Writing instrument form | Technical Pen |

## Product Details

- **Age range (description):** Adult
- **Brand:** rOtring
- **Colour:** Black
- **Ink colour:** Black
- **Material:** Plastic
- **Model name:** Isograph
- **Point type:** Fine
- **Special feature:** Refillable
- **Unit count:** 1.0 count
- **Writing instrument form:** Technical Pen

## Images

![Isograph Technical Drawing Pen | 0.35 mm | Refillable Fineliner Pen - Image 1](https://m.media-amazon.com/images/I/61hpi4RhybL.jpg)
![Isograph Technical Drawing Pen | 0.35 mm | Refillable Fineliner Pen - Image 2](https://m.media-amazon.com/images/I/61R+XejcgUL.jpg)
![Isograph Technical Drawing Pen | 0.35 mm | Refillable Fineliner Pen - Image 3](https://m.media-amazon.com/images/I/81jWrTgPWJL.jpg)
![Isograph Technical Drawing Pen | 0.35 mm | Refillable Fineliner Pen - Image 4](https://m.media-amazon.com/images/I/61qO4ek84ML.jpg)
![Isograph Technical Drawing Pen | 0.35 mm | Refillable Fineliner Pen - Image 5](https://m.media-amazon.com/images/I/919msp9t6RL.jpg)

## Questions & Answers

**Q: Can you use acrylic inks in this pen?**
A: I have only ever put Rotring’s ink in these pens. However, when left to dry, this ink is waterproof. I can apply very wet watercolour paint over the top and it does not run in the slightest.

**Q: Does this include a cap for the pen?**
A: Yes the 0.7mm does include a cap clearly marked on the top end 0.7mm in white lettering. The pen reference No:- Art. 151 070. Complete with instruction detail sheet to advise on maintaining your pen should also be inside the Pen Box in which should be provided with your order.

**Q: Can you use cartridges instead of filling it from a bottle**
A: I know there's a difference between Isiographs and rapidographs, one only takes cartridges and one you fill up with ink as it has a little detachable tube you unplug and fill up with ink. It should be self evident when you buy it as the Isiograph will have a cartridge already installed in it....hope that helps?

**Q: Has anyone used acrylic waterproof inks with Rotring isograph?**
A: They would block the Pen

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable. ink flow joy. Refillable and sustainable. Zero waste.
*by L***B on 21 September 2019*

This is a great pen. It draws smoothly and reliably. Takes India Ink which is waterproof and permanent. Way cheaper and sustainable to use a refillable pen than keep buying disposable pens. I bought a 250ml bottle of ink; way cheaper than the tiny ones. The steel nib will last forever. I use it most days. But if I leave it for a while, a good shake and the ink flows like a dream. I had been using cheaper brands, which were fine for a while, and then clogged and stopped working, even after extensive cleaning and faffing about. Grrr factor 10/10 after several months of use. As an artist and not a technical draughtsperson, I really rate these pens. Mine is a 0.6 nib. Can't vouch for the reliability of the finer nibs. However, it is too easy to over-tighten the grey nib holding section against the handle / barrel. Mine has a hairline crack, allowing the barrel to rotate a bit and be annoying. But it does not affect the drawing function, or ink flow, just the handling of the barrel. Still useable, but would like a better quality plastic at that point in the design. I have not been heavy handed with it. It was just a bit weak there on the thread. Having said which, it is far superior to the cheaper brands. I wasted money buying several cheapos, thinking I had simply bought a rogue pen initially. Not so. The working parts were just not as good as Rotring. Invest in the best.

### ⭐⭐⭐⭐⭐ My favourites!
*by I***A on 12 October 2025*

These are my favourite pens! Such fine lines although they can be bothersome to clean. I use these for drawing rather than writing and the quality is impeccable. They are on the more expensive side but nowhere else can I get such consistently fine lines. I like that they are refillable (the isographs so much more so than the rapidographs). For good consistent flow without having to clean them, these pens need to be used regularly. Weeks without using them can lead to splotchy lines or blocked pens.

### ⭐⭐⭐⭐⭐ Superb instruments
*by S***N on 29 September 2025*

I bought my set of pens 45 years ago as an apprenticed draughtsman, unfortunately I lost my 0.35mm and it had ink in it. It has been salvaged and back to the normal standard but I bought a replacement for an urgent task. First, Rotring are no longer made in Germany but still charge German prices. The quality has changed, not for the good of the instrument. Ink reservoirs no longer have chrome bands to strengthen them, the new ones will not be usable in 45 years and the plastic is a lower quality and poorer feel. When I bought my set in 1980 it cost me 2 weeks pay which caused murder at home as I had to pay a weeks keep extra in advance and another in arrears and go a week with no money to myself. It was a requirement so I had no choice,16 year olds today would be screaming at how unfair it was whilst I was happy I had a trade. You must clean them in diluted Rotring cleaner fluid every 6-8 weeks depending upon upon usage, daily 8 whilst now and again 6 weeks, soak and rinse then dry and back to work or storage. NEVER STORE THEM WITH INK IN, I was lucky mine were German engineering the new Chinese might not be so good but I will not be able to let you know in 45 years.

## Frequently Bought Together

- Rotring Isograph Technical Drawing Pen, 0.35 mm
- rOtring Isograph Technical Drawing Pen, Liquid Ink, 23 ml, Black
- Rotring Isograph Technical Pen, 0.25 mm

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-14*