Vicat apparatus

noun
Vi·cat apparatus | \(ˈ)vē¦kä-\

Definition of Vicat apparatus 

: a device for determining the normal consistency and time of setting of portland cements that consists of a rod weighing 300 grams, having a needle in each end, and supported in a frame with a graduated scale to measure the distance to which the needle penetrates the cement

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History and Etymology for Vicat apparatus

after Louis J. Vicat †1861 French engineer

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