Isograph Technical Drawing Pen, 0.20 mm

I have purchased and used just about every brand of this type of drawing pen for over 50 years. I bought 3 thicknesses of this pen, and all are the perfect thicknesses---after being compared to all the "thickness" examples available for comparison. Most pens of this type will dry out as soon as a day without use, but these pens have lasted over 10 days just sitting on my desk. Extremely happy with this purchase, and I will certainly order more if I want additional drawing widths.

If you take good care of this pen, it will preform like a pro. Lines are beautiful, but if you aren’t familiar with these types of pens you may want to spend some time getting to know how they work, how to refill them and how most of all how to properly clean them.

Exactly what I expected having used a rapidograph in the past. I use this everyday pretty much and have for over a month. Once you get use to it easy to use, fill, clean.

It works great

This pen is great. I really like it and highly recommend it for anyone wanting to create thin lines. I use it with white ink to create facets on gemstones. It's perfect. I only gave it 4 stars instead of 5 because it's a little tricky to get used to. Since the tip is so fine, it clogs a lot and the ink won't flow. The trick is to barely touch the paper with it. Don't put a lot of pressure on it. Also make sure to clean the tip often by soak it in warm water and alcohol. I hopes this helps.

It is difficult to express how superior the Rotring pens are to the Koh-I-Noor version, in my opinion. I gave up on tech pens years ago, after spending far too much money for a poor student on pens that clogged on days of the week ending in "day". It seemed at times just looking at them made them clog.(Edit) I am updating this to say that it is imperative that you use Rotring's ink in these pens, although I suppose the Koh-i-noor tech pen ink would work as well. Don't Use Dr. Martin's in these. I have 4 Rotring Isographs: .2, .3, .35 and .4. They are, in a word, superb. I generally draw on cotton paper, and the feel is superior to the other product. I have tried Faber Castell and Alvin as well. Alvin was superb, but extremely scarce. Faber Castell...don;t waste your money. The Rotring Isograph is what a technical pen is supposed to be. In essesnce, Koh-I-Noor, F, Castell= Ford Pinto. Rotring=Porsche 911. And they COST LESS.

Me agradó el producto y es lo que solicité

Gotta tell you I think this is way way way over priced crap. Got this and it stopped flowing ink after 1 use. I followed instructions and it’s as dry as Phoenix. My $9 fountain pen writes like butter. Very disappointed. I would NOT recommend. I can’t take any blame, used it right out of the box as supplied for $30 and junk.

You cannot get a better isograph technical pen then Rotring. The line size is always consistent and the rotring ink used in the pen is smudge proof and water proof.. It also dries really quickly. If u r into stippling or pointillism kind of drawing then Rotring is the best.

Ich will nie wieder was anderes

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.

製造されなくなり、だんだんと手に入りにくくなるようです。製図には、とてもいい製品であること、昔から知っていたし、使っておりました。今回は古代土器の実測に携わる方に使ってもらうために購入に至りました。末永く使ってもらえたらと思います。

good technical pen, sharp lines. Currently using it with acrylic ink and flowing well(note keep tightly closed or will clog ,recommend flushing with water after use).