Dual Range Portable Balance 2252 gx 0.00020.001mg, Ext. Cal, 1EA Features: Adjustable response characteristics and display hold ideal for tough weighing conditions Counting mode with Automatic Counting Accuracy Improvement (ACAI) Percent mode to display the weight value as a percentage of a reference mass Accumulation (M+) function to display the sum total of separate weighing results Density Determination EJ-13 Multiple units of measure: g, oz, lb, ozt, ct, mom, dwt, gr, N, pcs, (counting mode) and percent (percent mode) in addition to SG (density mode) 7 Auto power OFF function to avoid wasting power Specifications: Capacity: 22 g52 g Readability: 0.0002 g0.001 g Repeatability (standard deviation): 0.0004 g0.001 g Linearity: ±0.0006 g±0.001 g Sensitivity drift: ±20 ppmdegree C (10 to 30 degree con 50 to 86 degree F) Operating environment: 10 to 30 degree con 50 to 86 degree F, 85 percent RH or less (no condensation) Display type: 7-segment LCD with backlight (character height: 16 mm) Display refresh rate: 10 timessecond Units of measure: g (gram) oz (ounce) lb (pound) ozt (troy ounce) ct (metric carat) mom (momme) dwt (pennyweight) gr (grain) N (Newton) pcs (counting mode) percent (percent mode) SG (density mode) min. unit weight: 0.0002 g No. Of samples: 5, 10, 25, 50 or 100 pieces min. Percent display: 0.01 percent min. 100 percent weight: 0.02 g Power supply: AC adapter or 4 AA batteries Battery life: Approx. 70 hours with alkaline batteries, backlight OFF Weighing pan size: Ø50 mm External dimensions: 190 (W) x 209 (D) x 114 (H) mm Net weight: Approx. 1020 g Applicable calibration weight: 50 g Standard accessories: Breeze break, AC adapter, Instruction manual.