testing to confirm specific gravity by combining sensor measurements and user-entered weight. Devices are intended for professionals, investors, hobbyists, bullion dealers, and other users who need to verify gold, silver, and other precious metal products. The equipment can test through common plastic holders and assays, reducing the need for destructive methods. Sigma Metalytics also provides support, service, and repairs for its devices. The PMV line is designed specifically for coins and bars rather than jewelry.