Believe it or not, those blue stands on the right seem to be a strictly Australian invention/product. Too bad.
They're easy enough to make. For 2 stands it only takes:
- 2 x about 12-18" of 2" squ tube for the lower uprights/shafts;
- 2 x 14-20" long squ tubing of a size that'll slide neatly inside the 2" stuff for the upper/movable shafts and still leave a bit sticking out the top;
- 2 x 10" or there-abouts square (or maybe round?!) plates of 1/8" or thicker steel for the bases;
- 2 x about 3-4" long, 2" wide & 3/16th or 1/4" thick strap for the top bits on the smaller squ sections (you can bend say 1/4" on each end of each strap up a tad if you want, to help stop it sliding out from under any load - see the pic);
- 2 x 3&1/2 - 4" lengths of 3/8th rod or a couple of 3 - 3&1/2 long 3/8th or so bolts to act as the height selection pins, just pick a dia that works for you (mine are Grade 8 pins); then
- a 3/8th or so HSS drill bit to match the rod/bolt size so that you can get the rod/bolts to slide neatly thru, and drill One (1) hole thru both sides of the lower shaft, about 1/2-1" below the top.
- the base plate to the each of 2" squ tubes; and
- the top plates onto the smaller sized tube;
Regardless, if you look at it carefully enough to see how truly simple (and easy to make, as well as handy!) a piece of kit like this is, it really isn't all that hard to make/do, and even if you take it to a fabricator instead of DIY'ing, once the components are gathered/assembled (material cost, maybe about $40 for a pair now, I used whatever scrap was on hand) it should take maybe 30 minutes to make a pair for anyone who knows what they're about, then it'll take saaay, another 2 minutes or so to hit them both with some rattle-can paint in your choice of colour to make them all purdy!
Oh, and if you're being real picky, I do have a short length of chain securing each pin to the lower shaft, so that it'll still reach the hole easily and keep the pins from ever being lost. I did something a bit fancier on those in the pic, drilled holes, pressed slots, added split rings, etc, but really, just a dab of weld to secure the chain to the upright, another dab to fix the chain to the pin, and the job's done! There'll be enough 'flex' in about 3-4" of chain to allow them to work.
Go on, Do It!
You know you want to!