I was looking for a 10 1/2" square ruler but ran into this website and just had to share it. I thinks it's pretty cool for those who aren't so sure of themselves when it comes to the math part of things and it's also good for those of us in a hurry not wanting to let the math part slow us down. Check it out for yourself and see what you think.
Have a great day!
PS if you know where I can find a 10 1/2 " square ruler (other then the "Omnigrip") please let me know, thanks!