This baby is an absolute blast! Calculating derivatives, graphing your favorite f(x), and just generally crunching numbers. 

More interested in skipping math and loading Doom? Click Here.

The Jinkies Calculator cloth is great for cleaning off those smudges on your Sunnies Specs & Screens.
All Jinkies® branded microfiber cloths are guaranteed to remove Nerdwax from lenses.

DIMENSIONS: 7.5" X 3.5"