vicat apparatus

\(ˈ)vē|kä-\ noun

Usage: usually capitalized V

Etymology: after Louis J. Vicat died 1861 French engineer

: 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