SY-2.0B Automatic Temperature Control Double Digital Displays Ductility Instrument is applicable for measuring the ductility to the materials such as various specifications models of asphalt and liquid asphalt, the residue after the liquid asphalt distillation, asphalt emulsion residue etc. It has the advantages of step-less speed variation, large power refrigeration, internal setting of the water cycling, Low noise, long service life so on. It can automatically calculate and display the ductility average value to three samples. It is widely used in the production, road construction, scientific research departments. It is fit for the rectified bitumen experiment.