![ROCK FREE DILATOMETER](https://www.akpsho.com/images/shop/235678.jpg)
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The Rock free dilatometer is used to determine the expansion rate of stone in liquid.
It measures the ratio of rock specimen radial & axial deformation after being immersed in water against the original diameter & height of the specimen, it is expressed as a percentage.
The instrument comes complete with permeable plate and dial gauge.
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