How does it pivot at the elbow, and the front part stays level to the ground while the back half pivots up?
In: 2
If you have a parallelogram with pivots at the corners, the sides will stay parallel to each other, so you can have one segment not move at all, and the segment opposite will move but not rotate. If you have an image of a specific gate you’re confused about, that would help.
edit: Is this what you’re talking about? https://imgur.com/PvzpdrZ
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