The Ohaus Adventurer Pro Series Scales have established themselves as the industrys most versatile balance. It counts, it sums, it holds and it delivers traceable results. No other balance in its class offers as many features in a compact design. Weighing modes include g, mg, kg, toz, lb, oz, gn, dwt. Includes a single RS232 port and has internal calibration. This scale is Legal-for-Trade in both the United States and Canada. Scale measures 7 1/2" x 10" x 2 3/4" and comes with a 2 year warranty. This model AV812N has a maximum weighing capacity of 810g x .1g.