Calibrating AND EK1200i jewelry scale

http://scaleman.com/weighing-scales-e... A&D Weighing EK-1200i compact jewelry scale offers 1200 g x 0.1 g (NTEP Class II). Perfect for precious metals weighing with legal for trade approval. Learn how to calibrate your digital scale using a calibration mass. You can learn more about what is a Legal for Trade or NTEP Approved Scale at https://scaleman.com/legal-for-trade-... Have questions about calibration? want to know if a balance comes calibrated with a certificate of calibration then review https://scaleman.com/does-balance-com...