[The Iceman Cometh]

Oh look, here comes a flattie now, and he thinks a 2 foot level is going to detect the curvature of a planet which has a radius of about 6,371 km. You're going to need a larger yardstick, bud.

I've also strapped a bubble level to my car and driven around town. The bubble stays in the center. Flat earth: confirmed.

[messierhunter]

So you managed to prove that the gravity vector of earth points “down” to the ground regardless of where you are on earth. Good job.

[PROCON]

Flat earth: confirmed.

Here's more 'proof':