Quick adjust table leg design help?

[MatBirch]

I’m looking to design and fab a table leg set, or prop to hold the end of a platform. (Think supporting the end of a bedslide). It will need to hold maybe 80-100lbs. Trouble spot is that it will be camp trailer, so It will need to be able to quickly adjust to uneven ground. A simple inner/outer tubes with a welded nut with a thumb screw would work, but I doubt it would hold the weight without slipping, unless the the inner leg was tapered.
Maybe the guts of a pipe clamp??
How tough would a collar clamp like a painters extension pole be?

Any ideas?

Thanks!

 

[bdbecker]

Would something like this work? No idea of the quality of this product...

https://www.amazon.com/dp/B07Y2228QV/?tag=atomicindus08-20

EDIT:
Never mind... it looks like that only has one locked height, not variable...

The other option that comes to mind is to drill a series of holes spaced evenly apart in the interior tube and use a pin instead of thumb screw to hold it in place.

 

[ItsNemo]

Two pipes, one inside the other, series of holes, bolt goes through. Fine adjustment with an acme screw jack.

 

[lilscorpion]

Conceptually a design like a light duty tall trailer jack that can swing down and get close with a screw style micro-adjustment maybe

 

[bugnut]

the weight load is not that great, so why not a couple of aluminum telescoping tent poles cut too size,

https://www.amazon.com/dp/B004Z10D16/?tag=atomicindus08-20

or if you really want to load it up, they make nested unitstrut.

https://www.unistrutohio.com/perforated-square-tubing-2

 

[gahrajmahal]

My first thought was IKEA https://www.ikea.com/us/en/cat/legs-trestles-11845/

They sell inexpensive and adjustable table legs. Reading the other answers I agree with Bugnut about the unistrut, though it is better when you can weld to finish it off.