Precision Pocket Scale 500G X 0.01G, Digital Gram Scale with Tray, Small Food Scale, Jewelry Scale, Ounces Grains Scale with Backlit LCD[Gram Scale] Features Smart Off (TM), Foolproof Calibration (TM) Technology and Overload Protection, Batteries Included [Pocket Scale] Capacity x Readability: 500g x 0. 01g 17. 636oz x 0. 001oz 7716. 1gn x 0. 2gn 2500ct x 0. 05ct 16. 07ozt x 0. 001ozt 321. 50dwt x 0. 01dwt [Grain Scale] Units of Measure include: Grams, Ounces, Troy Ounces, Pennyweights, Carats, Grains; Arrow Scale, Archery Scale [Powder Scale] Ships pre calibrated; can be easily