This is a replica of the Death Star Crane, from A New Hope. If you don’t immediately recognize it, that’s because it was featured in ONE fleeting shot during the Trench Run, and is only seen from one angle for a split second… so this falls into what I like to call “Pseudio Scale”, where the subject is so obscure and reference so murky, that you have to “wing it” and make up a lot of the details. A few friends and I IDed what we could, and the rest was made up. It’s a lot of fun!
A screencap to show the actual crane in the film (far left):