Thanks to Prabu, here's some of your actual empirical evidence as to the size and shape of that most mythical and productive of weapons, Sachin Tendulkar's bat [you can read the story of how Sachin came to hand it over in the comments beneath this post].
Weight: 3lbs 2oz [1.4 kilos]
Edge at its thickest: 1.25"
Bow of the bat at its meatiest point: 2.25"
So it's true: the Tendulkar bat does top 3lbs. And as Prabu points out, not everyone can bat with it...