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  • How to use a Spectacle Frame Endurance Tester?
  • How to use a Spectacle Frame EnduranceTester?

    Test methods and standards:
    1. Open the temples in a natural open foot state, and measure the distance d1 between the two legs at the predetermined measurement point;
    2. Fix the frame on the instrument, set the number of tests (500 times), and start the instrument;
    3. After the instrument rotates, remove the instrument and observe the condition of the frame.
    4. Standard: EN1836, ISO12870
    a. The frame has no cracks and breaks;
    b. The deformation is not more than 5mm;
    c. It can easily open and close the temples with fingers, and the temples will not be closed down due to their own weight.

    The Spectacle Frame Endurance Tester of two gimbal-mounted gripping devices for constraining both sides (and the horizontal rods that form the bridge supports.
    The bridge supports have a triangular section with an angle of 30°±2° and a top thickness of 12mm ± 1mm, the upper edge is approximately radiating.

    The position of the clamp and bridge support can be adjusted at least 40mm relative to the horizontal and vertical.

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