Pennyweight is derived from the price for a hundred nails in 15th century England: the larger the nail, the higher the cost per hundred. The pennyweight also bears no relation to the weight of the American "penny" (1 cent) coin, which weighs 2.5 g (for those minted after 1982). Pennyweight A pennyweight (abbreviated dwt, from denarius weight) is a unit of mass that is equal to 24 grains, of a troy ounce, of a troy pound, approximately 0.054857 avoirdupois ounce and exactly 1.55517384 grams. In the Middle Ages, a British penny's weight was literally, as well as monetarily, of an ounce
Media weight Media weight Media weight is a term used in advertising to refer to the size of the audience reached by an advertising campaign. Media weight is determined by the number and placement of advertisements in media such as television commercials, online ads, or billboards. Media weight is usually expressed in the form of GRP’s (Gross rating Points), AOTS (Average opportunity to see) and reach of target audience. The main use of media weights is to monitor how well the goals of a communication plan are being reached. There are different ways to measure media weight. The most important method in