Patent ID: 8448492

Claim:
Device for in-situ determining the compactness of grainy material layers, especially determining the compactness of material layers containing equally solid part, liquid and gaseous phases, that consists of a guide body, a loading disc connected with the guide body and a dropping weight movable relating the loading disc along the guide body, said device characterized by that an indicator figure ( 20 ) is adjusted to a dropping weight ( 13 ), the indicator figure ( 20 ) has a guide organ ( 21 ), wherein one of the guide organs ( 21 ) and the guide body ( 11 ) are at least periodically in a connection with each other restricting the direction of movement and the guide body ( 11 ) is complemented with a length measuring unit ( 30 ), wherein the guide body ( 11 ) has an elongated bar (Ha) and the bar (Ha) has another guide organ ( 1 ib) of triangular, quadrangular or multiangular cross section.