how to weigh your flight luggage at home

How many times have I set out for the airport thinking I may be over the weight limit? Just about every flight. Shouldn't I get special luggage scales- well maybe but then I'd have to fly with them and they'd be just...extra weight. Then my friend Mike Ivey suggested a brilliant idea that is stunning in its simplicity. Instead of trying to balance your sagging bag on a pair of domestic scales simply get on the scales HOLDING the bag. Then weigh yourself without the bag. Do the easy subtraction. So simple it's genius.