The Tearing Strength Testing Instruments of a Sector Pendulum Pivoted on anti-friction ball bearings on a vertical bracket fixed on a rigid metallic base. The test specimen in the shape of a rectangular piece is held between two clamps, one of which is mounted on the pendulum and the other is mounted on the fixed bracket. The clamps are mounted in such a manner that their holding faces are aligned with each other when the pendulum is locked in its raised position. The adjustable knife is also mounted on the bracket, on which the pendulum and the fixed clamp are mounted, it is centred between the two clamps for making the initial slit in the test specimen. The pendulum is released by lifting a release lever. This action causes the test specimen to tear right through. The Tearing Strength is indicated on a scale fitted on the pendulum against a low friction pointer pivoted on the axis of the pendulum
A set of CHECK WEIGHTS is supplied with the tester for verification of the Scale.
In order to increase the capacity of the Tester, augmenting weights are supplied as STANDARD ACCESSORIES for testing of low strength materials, multiple specimens may be mounted at the same time