Personal Pocket Scale - Model Building Equipment - Weigh Pinewood Derby Race Cars and Other Models Genuine DigiWeigh 1000BX Deluxe Coin Scale with Lifetime Warranty Enables you to choose from Grams, Ounces, Troy Ounces, Grains, Pennyweight, and Carats Capacity: 1000g / 35.3oz / 32.1ozt / 15432gn / 643dwt / 5000ct Scale arrives to you pre-calibrated & ready to use; includes batteries, instructions, original packaging, and warranty information Perfect for Cub Scouts weighing Pinewood Derby cars -- make sure they're under the limit!