Gillmore Apparatus VT(H)-310 is used to determine initial and nal set times of portland cement, masonry cement, hydraulic hydrated lime, and certain mortars. The adjustable-position support has sets of horizontal arms to guide two weighted needles with flat-end cylindrical stainless steel tips. The "initial" needle is 1/4lb (113.4g) and 1/12in (2.12mm) diameter; "nal" needle is 1lb (453.6g) and 1/24in (1.06mm) diameter. Base has ample flat shelf for positioning specimens.