Mass Comparator, Internal Calibration. Meterological weighing to meet ASTM Class 2-7 and OIML Class F1 and below. Innovative auto-centering pan avoids corner-load errors and ensures higher accuracy. Extra decimal place makes it possible to monitor fine weight changes with heavy tare weights. Highest precision & accuracy due to Super Hybird Sensor SHS Weighing Technology. Enhanced stabilizing filters to mitigate environmental disturbances from draft or vibration. Innovative auto-centering pan design auto corrects for eccentricity (corner-load) errors by bringing mass to center. Extended resolution enables one to monitor weight changes in heavy objects or container weights. Standard RS-232C interface with Quick USB uni-directional (optional accessory). GLP/GMP compliant with time date stamp and balance ID printouts. Static checking-weighing sensor with wider ranges. Comparator function, counting and percent weighing ideal in industrial workflows.