I tried this luggage scale to weigh a suitcase and a backpack.  I found the scale to be very easy to use and easy to read.  I did find it to be 1-2 pounds off but that is not a big deal and could be because of the swinging of the backpack or many other things.  I like that this is compact and easy to carry with you so you can re-weigh at the airport.  I do wish it took a more common battery such as AAA or AA, though when I searched for replacement batteries here on amazon they are available very cheaply, under $2 for 2 batteries. I think this is an item every traveler needs now because of the fees airlines charge for baggage, overloaded baggage or extra bags.  This scale is a great way to stay under the airlines minimum weight and save money and aggravation once you get to the airport and find out your bag is overloaded and you have to pay a fee, which has happened to me!  I like this scale and will probably purchase more to give as gifts to my in-laws who travel every month.