- A&D FS-i Check Weighing Bench Scales feature large, bright comparator lights, stainless steel construction, and three user-selectable resolution levels. These durable scales are ideal for food processing and checkweighing applications. The scales have a 100 product memory to hold target weights and limits and also offer the user options including internal rechargeable battery, RS232, 422/485 interface as well as comparator output option.