The Scout™ Series are ideal for both education laboratories and industrial use. They are stackable for storage in a laboratory with limited space and has a large range of weighing modes available which make the balance suitable for a wider range of applications. USB or RS232 Connectivity. Transportation lock to protect the balance's weighing cell during transportation. Calibration lock to avoid accidental changing of settings. Powered by AC adapter included or 4 x AA cells (Batteries sold separately). Weighing Units: mg, g, kg, ct, N, oz, ozt, dwt, lb, lb:oz, grn, hkt, sgt, twt, tical, tola, custom unit 1.