Inventor Oakley

This wooden puzzle features a unique mapping of the first one-hundred million digits of the mathematical constant pi- 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679! A perfect way to test your mental powers and challenge your friends. #pi #woodenpuzzle #piDay #challenge #woodworking #math #puzzle #IQtest #nerdchallenge #funactivity #brainteaser