Have a look at these:
http://www.dealsdirect.com.au/p/ele...-calculator/My set is identical, but only weighs to 3Kg, the circular glass top is 6.25 inches in diameter. I just put a large envelope on them, and the readout is easily visible. If the readout
is obscured by the item to be weighed, place a tall bowl/jug on the scales prior to turning them on, this will elevate the item so the readout is visible.
The only time I sent a large package over 3kg, I weighed it in stages before putting it all together. The brand is 'Lumina', it might not be available in the US, but there's sure to be heaps of alternative brands and most likely cheaper over there too. Just search
ebay for Kitchen Scales.
The 3kg one takes a 'button' battery, the 5kg one takes 2xAA batteries.
life is a mystery to be lived not a problem to be solved