Balanzza pioneered digital luggage scales that strap to bag handles, then when hoisted, register and lock in the weight on a backlit LCD screen.
The new Balanzza Mini version ($24.85) is just 5 inches long and weighs only about 3 ounces. But it can measure weights up to 100 pounds. It runs on two included watch batteries.
Info: Magellan's (800) 962-4943