https://www.torbalscales.com/Precision/Scales
广告True Class I and II precision scales. Cost-effective and fully featured. Only $575. Available with automatic internal calibration, 0.001g and 0.01g, equipped with USB.
Internal Calibration · Free Shipping · Excellent Warranty · Lifetime Support
Models: 500g x 0.001g, 3200g x 0.01g, 6200g x 0.1g