Used to verify the dimensional and shape tolerances of rock core specimens up to 75 mm dia. by 120 mm length.  The straightness of the cylindrical surface can be easily verified as well as flatness and verticality of end surfaces by the same dial gauge using the magnetic holder in the desired position.
The apparatus comprises:

• "V" block with dimension 85 x 85 x 250 mm
• 25.4 mm x 0.001 mm digital gauge with magnetic holder
• Additional platen 100x180x8 mm
• 6 magnets for core locking

Support surface is not included in the apparatus and has to be ordered separately as accessory.