assay ton definition

• noun:
• a weight of 29,1662/3 grms.
• others:
• A weight of 29.166 + grams found in assaying, for convenience. As it holds similar reference to the milligram that a ton of 2000 avoirdupois weight does to your troy ounce, the extra weight in milligrams of precious metal acquired from an assay ton of ore gives directly the amount of ounces towards the ton.