The bonding strength of adhesive paper and adhesive paper tape is usually measure by the 180° constant-speed peeling test. These jigs are mounted on the upper frame and moving crosshead of the constant-speed tensioning universal tester. The specimen is secured by the upper and lower clamps, through two low friction guide rolls, and loaded as in the ordinary tensile test. A special mechanism is provided so that the peeling point is always located in the vertical line passing the upper and lower clamps, to achieve high accuracy and reproducibility. By changing the position of the rolls, you use this instrument for a wide range of thickness and hardness of specimens.