Why These Tools Matter

Shaped by years of sketching and teaching, these tools help you draw with confidence, precision, and ease.

Hello, I’m Jeongmo Han

For over 20 years, I’ve been designing, sketching, and teaching. Along the way, I created tools that didn’t exist but were truly needed.

After years of effort and refinement, the CLEARLINE Pen for cleaner lines and the Y-Ruler for effortless 120° perspective were born.

Want to improve your sketching?

Try using the very tools I use every day.

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