The Compressive Device for Rock Cores is used to perform compression tests on rock core specimens with a maximum diameter of 55mm.

The Compression Test Device for Rock Specimens Jig complies with ASTM D7012 Rock Core Specimens Test Methods, namely the spherical seat / compression plates / specimen diameter ratios.

The loading piston is supported by two springs; the upper compression platen has a spherical seat, while the lower platen is attached to the base.