AND Newton EJ [EJ-1500] Portable Precision Balance with External Calibration, 1500g x 0.1g  - 127 × 140 mm . The A&D Weighing EJ-1500 Newton EJ Portable Balance 1500g x 0.1gis affordable that offers flexible and practical performance. The EJ1500 smartly optimizes counting accuracy with "ACAI" that auto improves accuracy throughout your counting procedure. The EJ1500 external calibration switch and gravity acceleration correction keeps you accurate and precise.