Even if you've taken one of these apart - it's still hard to understand how it works!  Lucky for us, we've got 3D animation on our side.

Get your clicky pen here: http://amzn.to/2z9SoFO

Watch more videos:
How Big is the Atmosphere? - https://youtu.be/VVIesvLJjHE
What's a Second Cousin Once Removed? - https://youtu.be/BBt5V7kO3j4

Made with Blender 2.75
Music: Monks by Topher Mohr and Alex Elena (Youtube Audio Library)

#clickypen #mechanical #b3d