Ohaus Explorer Precision BalanceOHAUS Explorer High Capacity balances provide unmatched functionality in a line of high performance, high capacity balances unlike any other on the market! This smart and intuitive balance simplifies even the most complex high capacity laboratory measurements. Example of Model: EX223 Comes with internal calibration weight. EX223 E Does not come with internal calibration weight. Applications Weighing, Parts Counting, Percent Weighing, Checkweighing,