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Tombow was established in 1913 in Tokyo, when Japan was still building its industrial identity. Founded by Harunosuke Ogawa, the company aimed to create a Japanese pencil that could stand alongside the best in the world. Over decades, it refined graphite, wood, and manufacturing with a focus on patience and precision rather than speed.
This approach led to the MONO 100 series in 1967. The Tombow MONO 100 12-pencil set gathers a full range of grades, designed for control and flexibility. Each pencil uses an ultra-fine graphite structure with up to 10 billion particles per cubic centimeter, delivering smooth, consistent, and precise lines.
MONO 100 is a tool for professionals, artists, architects, and designers who rely on accuracy in every stroke. Built from premium cedar wood with perfect balance, it offers a natural, controlled drawing experience shaped by Japanese craftsmanship and attention to detail.
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A phenomenal pen, wonderful balance from the material choices with the weight leaning slightly to the front. Great ink flow though I have no doubt an ebonite feed would have improved it. Arrived with quite a scratchy extra fine but I sorted that with little effort and honestly there is simply no beating the unique filling system or the absolutely perfect engineering and tolerances evident in Roy’s creation. Puts all else to shame (except maybe Gravitas of course).
Emy and the team were fantastic in arranging the shipping to perfection and keeping me informed himself throughout!
I purchased this Gravitas Twist (Grade 5 titanium) and wanted to share my thoughts.
• The tip shows zero wobble while writing — the build feels extremely solid.
• The twist mechanism has a clear rotational feel, but it reads more as a “push” motion than a gadget-like click. There’s no satisfying tactile snap in the hand, so this may not suit everyone’s taste.
• The coating’s color is beautiful and pairs especially well with a leather pen case — I really like this combination.
• The center of gravity sits fairly high, giving a sense that the pen swings a bit while writing. Those with smaller hands may find this top-heavy balance noticeable.
• This feels less like a pen optimized for writing feel, and more like an object meant to be enjoyed simply for how it sits in the hand.
• Being titanium, it’s light, yet the rigidity is very pronounced — well suited to those who write with a heavy hand.
• The coating feels extremely durable; I’d expect it to resist both discoloration and scratches over time.
I love the feel of this pen. I am a fan of a pen that feels like it has heft. The Sentry in copper absolutely fits the bill. Unfortunately for me, I find the nib to be a bit challenging in terms of flow. A bit of a search tells me this isnt ridiculously uncommon and there are various things to try to fix it. I've ordered a new nib separately. While there are other steps I could have gone through to try to resolve, it seems like a problem I shouldn't have with a brand new pen.
Still 4 stars because everything about this pen is magnificent.
Its a exquisite pen to use.
I wanted to drop a quick note to say that the Titan Slim Line is a very impressive pen and wonderful to write with! I started with a medium nib, which I quickly realized wasn’t what I really wanted as this pen felt like a daily writer, so I replaced the nib with a standard Jowo fine that perfectly screwed right in. The fit and finish are extremely nice on the pen! It really feels like one solid piece since the clearances between both the screw down finial and the metal to acrylic sections of the body are so finely machined! I really love the micro grooves in the section that give it a very pleasant feel when writing. The exceptionally smooth filling mechanism and the amount of suction produced is class leading in my opinion. Some will feel the price is too high due to no gold nib, but I’ll say the pen puts gold nibbed pens with basic acrylic bodies and converters in second place to me. Finally, Pen Venture had the pen to my house in the US in less than a week, including of course, a lovely hand written note. I suggest buying this pen if you are on the fence and seriously considering it if you are looking for a unique and beautiful new pen.
Excellent service, fast delivery and great customer care. Thank you for the kind handwritten note.
