Ladder crane. I admit I'm skeptical.
0:14 video:
https://www.youtube.com/watch?v=_dI5h9SzKpI
Roof lift in a residential area; woman is strolling below. 1:41 video:
https://www.youtube.com/watch?v=T8OhEL3BWEE
Even on the ground, tilting the ladder like that, to kinda form half a gantry; is that OK? 2:31 video:
https://www.youtube.com/watch?v=qEOpLQRfj_8
More: https://www.laddercrane.com
Previously:
https://www.homemadetools.net/forum/...760#post124166
https://www.homemadetools.net/forum/...519#post132193
https://www.homemadetools.net/forum/...509#post132112
https://www.homemadetools.net/forum/...442#post122412
https://www.homemadetools.net/forum/...2215#post75959
https://www.homemadetools.net/forum/...494#post117152