AND FX-i [FX-300iN] Standard-Level Precision Balances with External Calibration & NTEP-Approved, 320g x 0.001g - 130mm. The A&D Weighing FX300IN Precision Balance is robust and durable, featuring a Compact Super Hybrid Sensor (C-SHS) that makes it compact, fast, and precise. It includes a wide range of modes to meet a wide range workflow needs. The FX300iN is NTEP certified and can be placed in service and used in legal for trade applications.