321-9249-002 LS 120A 120 g 0.1 mg The Series 321 meets and exceeds user expectations regarding design, functionality and reliability of a modern weighing instrument. Swiss quality combined with the latest technology make the Series 321 the first choice for both laboratories and industrial weighing applications where ease-of-use, efficient measurements and reliable results are required. With Self Calibration System (SCS) is included with the 321 LS model as standard.