;)
VICAT NEEDLE APPARATUS
As per IS: 4031, 2645, 2542 (Part-I), 1727, 5513 &712,
This instrument is used for determining the normal consistency and setting times of cement and 'A' Class limes.
Specifications : The apparatus consists of a metallic frame bearing a freely movable rod with a cap at top, one vicat mould, split type and glass base plate and one set of needles one each initial needle, final needle and consistency plunger.
VICAT NEEDLE APPARATUS WITH DASHPOT
Same as above but in addition is fitted with a dash pot which facilitates gentle lowering of needles.