Digiweigh 100AX Clear Cover Digital Scale, Navy Blue, Gram Ounce Carat Grain 4 MODES! Gram (g), Ounce (oz), Carat (ct), Grain (gn) Great for weighing Diamonds & Gemstones, Precious Metals, Archery Arrow Tips, Gunpowder for Reloading & MUCH more! STAINLESS STEEL weighing platform is top quality! CLEAR PLASTIC COVER doubles as an expansion tray! INCLUDES 2 AAA batteries AND 2 50-gram calibration weights!