The Equilateral Pen Notebook Style_Experiment it IS rocket science

it IS rocket science

Here's an inky blue mouse pad featuring some of your favorite squid and octopus

Gift one to a fellow ornithologist

keep organized data sets

Slip this notebook into your bag before you head out in search of fairy circles or morels

The Equilateral Pen Notebook Style_Experiment it IS rocket scienceThere's something beautiful about the 60 degree angles of an equilateral triangle. Here's a metal pen that's ready for your most elegant proofs, thoughts, or musings. With a cap that snaps on with a satisfying click, take your notes to the next level with the Equilateral. Each pen comes in its own felt case. Refill it with our special . 7 mm or . 5 mm ink cartridges.