AND Newton EJ [EJ-6100] Portable Precision Balance with External Calibration, 6100g x 0.1g  - 127 × 140 mm. The AND Weighing EJ-6100 Newton EJ Portable Balance 6100 g x 0.1g is affordable that offers flexible and practical performance. The EJ6100 smartly optimizes counting accuracy with "ACAI" that auto improves accuracy throughout your counting procedure. The EJ6100 external calibration switch and gravity acceleration correction keeps you accurate and precise.