Comparison : Item # 30100631, Ohaus Adventurer 220 Gram (g) Capacity NTEP Precision Balance
Item # 30100632, Ohaus Adventurer 420 Gram (g) Capacity NTEP Precision Balance
Item # 30100633, Ohaus Adventurer 420 Gram (g) Capacity NTEP Precision Balance
Item # 30100634, Ohaus Adventurer 520 Gram (g) Capacity NTEP Precision Balance
Item # 30100635, Ohaus Adventurer 620 Gram (g) Capacity NTEP Precision Balance