nice, i guess you are getting the top bit water cut, very neat.
comment – do you need a nyloc on the nut to stop it coming undone? maybe a stainless allen headed bolt would look nice, but then again the cost would be a lot more.
one suggestion, it’s a pity it can’t break down a bit more so it costs less to post? maybe delete the welded strap which holds the two legs together, and replace with a cross tube spacer which is held with a bolt (going thru the spacer) similar to the top one, going thru holes in the main legs. This would make it pack down a bit more, but then again this might not be important to you.
quite good idea though, it’s just the thing to throw in the back of the car so you can fettle your gears or whatever when you get there.