Comments about Pentel® Recycled Sign Pen, Fine Point, Black, Dozen:
I am an architect, and I have used the "Sign Pen" for years. This is best marker for architectural sketching. The lines are bold and consistent even after many hours of use.
Comments about Pentel® Recycled Sign Pen, Fine Point, Black, Dozen:
Pen writes well and is generally good, but some ink stays on the cap, leaving residue on your fingers when you take it off (or after you've put it on the back of the pen and then removed it).