1 Digital Pocket GRAIN SCALE-Electronic Machine for Archery Arrows 100gr OR Reloading Powder Choose from 4 different modes: Grain (gn) Gram (g), Ounce (oz), Carat (ct) Capacity & Accuracy: 1542.8 x 0.2 gn, 100 x 0.01 g, 3.527 x 0.0005 oz, 500 x 0.05 ct Flip-Open cover protects STAINLESS STEEL weighing platform when scale is not in use Bright blue LCD Display makes it very easy to read 2 "AAA" batteries included, PLUS 2 FREE fifty(50) gram calibration weights!