Follow the narrative to see how small design choices affect everyday performance. In this video, we demonstrate the hand-held spray nozzle testing equipment for IPX3 and IPX4 verification per IEC60529. Watch how the brass nozzle, moving shield, and pressure gauge are set up and operated to simulate spraying and splashing water on large enclosures. We walk through the IPX3 test with the counterbalanced shield in place, then show the IPX4 test with the shield removed, explaining flow rate adjustment and test duration along the way. Ideal for engineers and QA teams who want a clear, practical walkthrough of the equipment in action.