AND FZ-i [FZ-500i] Standard-Level Precision Balances with Internal Calibration, 520g x 0.001g - 130mm. The AND Weighing FZ-500i Precision Balance, 520g x 0.001g is robust and durable. The FZ500i features Compact Super Hybrid Sensor(C-SHS) that makes the scale compact, fast, and precise. The FZ500i includes a wide range of modes to meet workflow needs.