Shigeru Ban’s Retractable Roller Ball Pen

Shigeru Ban’s retractable roller ball pen for acme studios doubles as an architect’s scale. Even though computer generated visualizations and renderings have become the norm, drawing still remains a key skill in the life of an architect in the case that one needs to quickly draft a plan, or sketch out a concept without hesitation. Shigeru Ban’s ‘scale’ retractable roller ball point pen responds to this. It has been conceived as a writing tool, but its triangular form sees it double functioning as a scale ruler that includes metric and imperial measures — serving architects and engineers working across the globe. (Read more) Via designboom.com