​Preparation before operation of the leather material tensile testing machine:

1. Á traustum grunni eða vinnubekk, rétt uppsettur, hefur umhverfið engin titring og engin ætandi miðill;

2. The fluctuation range of the power supply voltage should not exceed ±10 percent of the rated voltage, the power supply of the testing machine should be reliably grounded, and the frequency fluctuation should not exceed 2 percent of the rated frequency;

3. Herbergishiti er 10 gráður -35 gráður, og rakastig er ekki meira en 80 prósent.