Used to determine the strength values of a rock specimen both in the field and in the laboratory.
It consists of a load frame for applying loads up to 56 KN, on which a manual hydraulic jack is mounted. The instrument accepts core specimens up to 4” (101.6 mm) diameter which are loaded by two coneshaped points.

A graduated scale indicates the distance between the conical points.

The applied load is measured by a high precision electric load cell with a digital display unit range 0-56kN proving:
- 65.000 divisions
- 0.001 kN resolution
- Linearity: 0.05%
- Hysteresis: 0.03%
- Repeatability: 0.02%

The strength index (IS) is got by the formula P : D2 where P is the strength and D the space between the two conical points. Supplied complete with wooden carrying case, goggles, accessories.

Dimensions: 400x530x720 mm.
Weight: 25 kg