This luggage scale traveled halfway around the world with me.  Although it has been reliable, I always give myself 3 pounds of extra caution when weighing my luggages.  For example, if the airport limit is 50 pounds, I would make sure my luggage is 47 pounds.  There are some airports that do not calibrate their scales, thus even though your luggage weighs 50 pounds, the airport personnel, at times, will advise me that I am two or three pounds over the luggage weight limit.

I like this scale in that I gave it as a gift to a friend.