Length Comparator

Model HV-EXP220
IS: 1199-1959: IS: 4031-1968: It is used to measure theDrying shrinkage of concrete, autoclave expansion ofportland cement and potential expansive reactivity of cement Aggregate combinations in mortar bars during storages. The instrument consists of a chanelled base over which twovertical pillars are fixed. A cross plate moves up and down at the top. The dial gauge,reading to .002 mm. x 12 mm can e fixed to the top crossPlate. The plunger end of the dial gauge can be located upona 6.5 mm. dia bailor other reference point cemented in thespecimen. On the base there Is a similar recessed seating inwhich can be located a second ball or reference point in thespecimen. Complete with a stainless steel standardization bar with 6.5mm. dia ball mounted in the ends. The unit is supplied with a.01 x 10 mmdial gauge