Rock Classification Hammer

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• Lightweight and portable, with carrying case.
• Includes rubbing stone for surface preparation.

This lightweight and portable impact hammer is used for rock classification tests.

The hammer is similar to a device used for many years for strength classification tests of mass concrete. Cylindrical cores, usually NW size, are held in a horizontal position and the hammer mechanism impacted against the core to obtain rebound readings. A series of readings is taken along the length of the core to get the average rebound number.

Model No. Desc
77-0470 Rock Classification Hammer
77-0480 NW Rock Cradle

NW Rock Cradle

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The Rock Cradle is used to hold cores in place during rock classification test procedures. The cradle incorporates a guide for positioning the hammer to allow for a series of readings along the length of the core.

Model No. Desc
77-0480 NW Rock Cradle