What does a pipe diameter tape measure have to do with Pi Day? It’s a tape that you wrap around a pipe (the circumference), and it reads out the diameter for you. You don’t need to divide by pi (3.14159). It’s a simple but amazing tool for those that work with pipelines in oilfields and gas fields. Even arborists use them to measure the diameter of a tree trunk.

What does a “pie” have to do with this? 2 reasons. First, the two words sound the same. Second, pies are round, which is the appropriate shape when you are comparing circumferences and diameters.

So, enjoy the day by eating your favorite pie.

And now for the CONTEST:

What famous scientist was born on Pi Day?

The first person that leaves a comment here, with the correct name, will receive a FREE Diameter Tape in the mail. (Continental US only). Don’t leave your address, for security reasons. I’ll contact you privately for that information.