I was just invited to observe navigation and shiphandling classes at the US Coast Guard Academy. They had a digital camera set up over the instructor’s chart table and monitors positioned around the room so the cadets could see his examples. What I found interesting is that he used a set of colored sharpie ultra fine point markers for doing advanced Maneuvering Board work and it really helped me visualize the examples. I also really liked the crispness of the pen lines vs a traditional pencil.
Pilot, FriXion Fineliner Erasable Marker Pens, Fine Point .5 mm, Pack of 10, Assorted Colors : Office Products
A multi-functional pen with black and red ballpoint pens, a mechanical pencil and a refillable eraser by Tombow. The rotary function lets you write with a ballpoint pen with Air Touch Ink, a low-viscosity oil-based ink that provides a superior writing experience. The attached MONO eraser twists from the top of the barrel and can be conveniently refilled. The pen also functions as a mechanical pencil with a 0.5mm lead.
Tombow Mono Graph Multi 2+1 CPA-161 0.5mm Multifunctional Pen - Gold
Pilot FriXion Fineliner Erasable Marker Pens
Tombow Mono Graph Multi 2 Color 0.5mm Ballpoint Pen + 0.5mm Mechanical Pencil-Gold (CPA-161B) : Office Products
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Size: 0.7mm in diameter, 60mm / 2.36inch in length; Quantity: 10 boxes colored refills, each box contains 12 refills, total 120pcs colored refills.
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Pilot, FriXion Fineliner Erasable Marker Pens, Fine Point .5 mm, Pack of 10, Assorted Colors : Office Products