Classroom + Lab Equipment: New 100 x 0.01 Gram ELECTRONIC BALANCE + Calibration Weights! Digital Scale for Lab Chemicals, Lapidary Materials, Specimen & More! Weigh Allows you to choose from 4 different modes: Gram (g), Ounce (oz), Grain (gn), Carat (ct) Capacity & Accuracy: 100 x 0.01 g, 3.527 x 0.0005 oz, 1542.8 x 0.2 gn, 500 x 0.05 ct Bright blue, high-contrast LCD Display makes it very easy to read Clear, durable cover protects the weighing platform when scale is not in use, and doubles as an expansion tray Includes Instructions, AAA Batteries, Two (2) 50g Calibration Weights, and WARRANTY!