Length Comparator for Cement Testing - 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.. Detail : The instrument comprises of a directed base over which two vertical columns are settled. A movable cross plate is at the best. A dial gage, perusing to .002mm x 12mm. Can be situated upon a 6.5mm. dia ball or other reference point established in the example. On the base there is comparative recessed seating in which can be set a moment ball or reference point in the example. Finish with a stainless steel institutionalization bar with protected grasp and with 6.5mm dia. Balls mounted in the closures. The unit can be provided with an Electronic Dial Gauge at additional cost.
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