Digital Pocket GRAIN SCALE for Archery Arrow Point/Tip Bow Hunting Choose from 4 different modes: Grain (gn), Carat (ct), Gram (g), Ounce (oz) Clear plastic cover doubles as an expansion tray Bright blue LCD display makes it very easy to read TARE function allows you to reset the scale to '0' while in use Plus, includes two (2) FREE "AAA" Batteries