Help! My door won't open! Here are some *pointers*.
In this short demonstration of a 3-point locking door mechanism in action, you'll notice the handle is moved one way 90 degrees and back to the middle to lock. Then, the handle is moved the other way 90 degrees and then to the middle to unlock. You must go back to the center position each time to open or close the door. This style of door handle is extremely durable and secure.
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Негізгі бет Ғылым және технология How to Operate a 3-Point Locking Door
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