美國西特電子天平型號 稱量 最小讀數 線性 重復性稱盤尺寸BL-120A/P 120g 0.001g±0.002 ±0.001 Φ120mmBL-200A/P200g 0.001g±0.002 ±0.001 Φ120mmBL-310A/P 310g 0.001g±0.002 ±0.001 Φ120mmBL-410A/P410g 0.001g±0.002 ±0.001 Φ120mmBL-500A/P 500g 0.001g±0.002 ±0.001 Φ120mmBL-1200A/P1200g 0.01g ±0.02±0.01Φ158mmBL-2000A/P2000g 0.01g ±0.02±0.01Φ158mmBL-3100A/P3100g 0.01g ±0.02±0.01Φ158mmBL-4100A/P4100g 0.01g ±0.02±0.01Φ158mmBL-5000A/P5000g 0.01g ±0.02±0.01Φ158mm