About This 0.001g/1mg High Precision - This lab scale features a 500g full weighing capacity paired with ultra-precise 0.001g readability to meet delicate measurement demands. Equipped with built-in level bubble and adjustable leveling feet, it effectively reduces measurement deviations. Ideal for laboratory research, precious metal & gemstone jewelry weighing, chemical powder testing and tiny electronic component analysis 13 Convertible Units for All Scenarios - Simply press the UNIT button to instantly switch among 13 widely used weighing units, covering g (0.000 gram), ct (carat), oz (ounce), ozt, N, lb (pound), dr, GN (0.00 grain), dwt, % (percentage weighing), tl-T, T, and kg (kilogram). This gram scale fits multiple usage scenes including university labs, jewelry stores, manufacturing inventory counting and herbal raw material measurement Multi-Purpose Tare & Counting Functions - This scientific scale is built with two essential practical functions for daily work. The tare button quickly deducts the weight of bowls, trays or other containers to display pure net weight directly. The piece counting mode supports fast batch tally of screws, beads, coins and small accessories, cutting down much time on inventory sorting Dual Power Supply & Detachable Draft Shield - The precision scale supports two power modes: the universal 100–240V AC adapter provides stable long-time power for fixed desktop use; a DC 9V battery (not included) acts as emergency backup power with about 30 minutes of runtime. The draft shield blocks air currents and dust interference, maintaining stable and accurate readings even in open, busy working environments Built-in RS232 Interface with Cable - The analytical balance comes with both the RS232 port and a connecting cable. You can effortlessly link the scale to your computer or thermal printer to store weighing data, export records and print standardized test reports, greatly simplifying data recording work for labs and retail shops Overview Brand : Antstone Color : White Recommended Uses For Product : Jewellery Special Feature : Counting Function, Data Output, High Precision, Tare Function, Unit Convert, Windproof Shield Display Type : digital