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The tog is a measure of thermal resistance, commonly used in the textile industry, and often seen quoted on, for example, duvets.
Additional recommended knowledge
The Shirley Institute in Britain developed the tog as an easy-to-follow alternative to the SI unit of m2K/W. Launched in the 1960s, the Shirley Togmeter is the standard apparatus for rating thermal resistance of textiles, commonly known as the Tog Test.
A tog is 0.1 m2K/W. In other words, the thermal resistance in togs is equal to ten times the temperature difference (in °C) between the two surfaces of a material, when the flow of heat is equal to one watt per square metre.
According to British retailer John Lewis, tog guidelines for duvets are as follows:
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Tog_(unit)". A list of authors is available in Wikipedia.|