The length gauge is used for determining the elongation index of aggregates. Aggregates particles are considered elongated when their length is more than 1.8 of their nominal size. It consists of a wooden base, a brass plate and steel pins.
To evaluate the flakiness and the thickness of the aggregates particles, suitable sieves codes 47-D0415/x and Thickness gauge code 47-D0540 can be used.




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