With many airlines charging for checked luggage, you might want to invest in a luggage scale. In the past I have used a regular bathroom scale to weigh my packed bag. Since packlight people don't normally travel with their bathroom scales in tow, the portable scales are a convenient option. The Travelon Ergonomic Digital luggage scale works very well. The only flaw is that the product itself adds extra weight. Personally, I find it easy to use but don't take it on trips. There are several varieties on the market. Go to your favorite travel store and ask for a demonstration.
