How good are your eyes?

[Saphellae]

I got 10.24 without using a ruler or anything, and quickly in between doing things.

 

[snack_pack85]

.....there's something wrong with that test....i took it twice and failed miserably....worse than anyones admitted to here....hmmmm.

 

[CharlieD]

Average error: 10.59 not really sure how all of this works. or rather not sure about all the english terms

 

[RobsanX]

5.04, pretty fun!