AND Apollo GF-A [GF-1603A] Multi-Functional Precision Balance with External Calibration, 1,620g x 0.001g - 128 x 128mm. The AND Weighing Apollo GF-1603A Precision Balance, 1620g x 0.001g is robust and durable. The GF1603A features Compact Super Hybrid Sensor(C-SHS) that makes the scale compact, fast, and precise. The GF1603A includes a wide range of modes to meet workflow needs.