BM series Range: 22g - 250gResolution: 0.001mg (1μg) - 0.1mg GH/HR-i series Range: 51g - 320gResolution: 0.01mg - 0.1mg GR series Range: 42g - 310gResolution: 0.01mg - 0.1mg HR-A/HR-AZ series Range: 62g - 252gResolution: 0.1mg - 1mg