Abstract: An airtight tester is used to test air tightness at a testing position of an object to be tested. The airtight tester includes a base, a leakage-test pipe, a moving unit, and a detector. The leakage-test pipe is connected to a pressure source, such that the pressure source may output a pressure to the leakage-test pipe. When the leakage-test pipe covers at the testing position of the object, the moving unit is pressed at an outer edge of the leakage-test pipe, so that the leakage-test pipe is jointed to a surface of the object, and thus, the detector detects the pressure state of the leakage-test pipe. Therefore, the testing staff obtains the air tightness of the object through an output message of the detector, and thus strengthening the structure of the object through utilizing the information.

Abstract: A dustproof and waterproof performance detection device for a user to observe a dustproof and waterproof performance detection process of an object by naked eyes is described. The detection device includes a box with at least one transparent side, a carrier, and a gauge. The carrier is movable in the box in a depth direction of the box. The box carries water for a tester to perform the dustproof and waterproof performance detection, such that the tester uses the carrier to carry the object, so as to move the object to a detection position and compare with scales of the gauge. Therefore, the tester is able to participate in the whole detection process.