If you need serious precision for your lab work, this A&D FX-500i balance is a real workhorse. It measures up to 500 grams with an incredible 0.001g resolution - that's seriously accurate for weighing small samples, chemicals, or precious materials. The external calibration feature means you can keep it perfectly calibrated over time, and the RS-232 interface lets you connect it to computers or printers for data logging. It's part of their FZ-i series, so you're getting the same great functionality and performance, just with external calibration only. Made in South Korea by A&D Engineering, you know you're getting quality instrumentation that'll hold up to daily lab use. Whether you're in research, quality control, or any application where every milligram counts, this balance delivers reliable results you can trust. The package comes ready to use at 15x12x10 inches and 9 pounds total. Definitely a professional-grade piece of equipment that makes precision weighing straightforward and dependable.