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It is used to measure the dying shrinkage of concrete autoclave expansion of Portland cement and potential expansive reactivity of cement aggregate combinations in mortar bars during storage, on self drying. Other Details:
The instrument consists of a channeled or a round base over which two vertical pillars are fixed.
An adjustable cross plate is at the top. A dial gauge, reading to .002mm x 5mm.
Can be located upon a 6.5mm. dia ball or other reference point cemented in the specimen.
On the base there is similar recessed seating in which can be placed a second ball or reference point in the specimen.
Complete with a stainless steel standardization bar with insulated grip and with 6.5mm dia.
Balls mounted in the ends.
The unit can be supplied with an Electronic Dial Gauge at extra cost if indicated at the time of placing the order.