<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2008) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2008) (Learn how and when to remove this template message) </Td> </Tr> <P> Tare weight / ˈtɛər /, sometimes called unladen weight, is the weight of an empty vehicle or container . By subtracting it from the gross weight (laden weight), the weight of the goods carried (the net weight) may be determined . This can be useful in computing the cost of the goods carried for purposes of taxation or for tolls related to barge, rail, road, or other traffic, especially where the toll will vary with the value of the goods carried (e.g., tolls on the Erie Canal). Tare weight is often published upon the sides of railway cars and transport vehicles to facilitate the computation of the load carried . Tare weight is also used in body composition assessment when doing underwater weighing . </P> <P> The word tare originates from the Middle French word tare "wastage in goods, deficiency, imperfection" (15c .), from Italian tara, from Arabic طرح ṭarḥ, lit . "thing deducted or rejected," from taraha "to reject" </P>

What is the difference between tare and zero on a scale