Does anyone know where I can source a support, shown is the attached picture for my own chart table ?

No I have one of those on my fridge lid!
Should have looked closer at my pic! Yes I suppose a low load and short strut would work. Thanks.Your thread title says "adjustable support", but your picture shows a support which isn't adjustable.
I fitted a cheap gas strut on my chart table. It isn't adjustable either, but works very well. Loads on eBay as kitchen accessories.
View attachment 93686
Should have looked closer at my pic! Yes I suppose a low load and short strut would work. Thanks.
Yes copied from another boatyard website. Another lack of attention to detail!Your pic was rather tiny...
No I have one of those on my fridge lid!