Classic Hifi Care

I will offer this supplier for your consideration. They have lots of supplies that might come in handy if you are redoing a portable cabinet of some kind. Record player, speaker, guitar amp, that kind of thing. They post informative videos on YouTube about installing Tolex and other types of cabinet coverings.

https://www.reliablehardware.com/

Greg,
What do you guys think of the lid stays that
Reliable offers ?

Is there a way to measure what size to use ?

More than once have I come across a hi-fi that had a
broken or worn cabinet lid hinge that would not keep
the lid up/open.

I saw those. I'm not sure how to measure for a holding device. Probably some geometric equation of some kind. I'd probably guess, get the one I think will work, then dummy it up to get it where it needs to be.