page_title: Troy weight
hierarchical_section_title: Troy weight
caption_attribution_description: English: Ingots of Germanium, Iron, Aluminium, Rhenium, and Osmium, one troy ounce each, on millimeter paper
context_page_description: Troy weight is a system of units of mass that originated in 15th-century England, and is primarily used in the precious metals industry. The Troy weights are the grain, the pennyweight, the troy ounce, and the troy pound. The troy grain is equal to the grain-unit of the avoirdupois system, the troy ounce is heavier than the avoirdupois ounce, yet the troy pound is lighter than the avoirdupois pound.
context_section_description: Troy weight is a system of units of mass that originated in 15th-century England, and is primarily used in the precious metals industry. The Troy weights are the grain, the pennyweight (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces). The troy grain is equal to the grain-unit of the avoirdupois system, the troy ounce is heavier than the avoirdupois ounce, yet the troy pound is lighter than the avoirdupois pound.
caption: One troy ounce (1.1 oz; 31 g) samples of germanium, iron, aluminium, rhenium and osmium
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