Steady, stable, and reproducible hardness measurement allowed by the flexible joint system.The problem with manually measuring the hardness of a rubber specimen is that the results may vary with the operator. The CL-150 series eliminates such variations. The flexible joint system makes the pressure foot of the durometer contact perfectly with the test piece and thus enables a precise and reproducible measurement. Furthermore, the models may be used for durometers requiring various measuring loads by replacing the weight.