Point load tester
The point load tester performs a precise determination of the uncorrected point load strength index, which is then converted into a point load index standardized to a diameter (De) of 50 mm. This converted value, known as "Is(50)," serves multiple purposes, including rock strength classification and the estimation of parameters such as uniaxial compressive strength (UCS) and rock anisotropy, represented as Ia(50).