Electronic balance FA-C Auto internal calibration balance, no need weights to calibration, And it is magnetic cell. 3 Door glass draft shield - easy access to weighing chamber RS 232 interface - allows communication with peripheral data collection and printing instruments Huge, bright backlit LCD display - easy to read in all lighting conditions including bright sunlight Reads in multiple units and functions - allows flexibility of weighing across many disciplines Filtering levels - can adjust balance response to differing environmental conditions for more controlled results.