This listing is for a Sartorius Practum The unit is in full working condition and is ready for immediate release. The Practum series from Sartorius is positioned as a standard‑laboratory precision balance line: “you can’t go wrong … without compromises in precision and reliability.” The 513 model variant supports a weighing capacity of ~510 g with readability of 0.001 g (1 mg). For example, for the 513 model: capacity 510 g, readability 0.001 g, repeatability ~±0.001 g, linearity ~±0.002 g. Robust build: German‑engineered weigh cell protected against overload, aluminium die‐cast base + ABS housing in many models. Practical features for lab use: A draft‑shield/wind‑protection for precision weighing, especially for those 1 mg readability contexts. The draft shield is described as robust yet easy to clean/disassemble. Supervisor lock: a menu lock to prevent unintentional changes by operators. USB interface (“Mini‑USB”) for data export and “Plug & Work” connectivity to PCs/printers with minimal extra software. Level‑indicator (bubble) and extra‑large adjustable feet for easier manual leveling. Cleanability/maintenance: The brochure states that the draft shield side windows, sliding cover and stainless steel parts on certain models (including 213/313/513) are easily removable for cleaning. Multi‑application: The balance supports not just standard weighing, but also density determination, percent weighing, check‑weighing, counting, etc