Hello Charles, first off let me compliment you on the fantastic work - as always.

I have a quick query for you, if you don't mind.
In this image I see you have some very interesting stand-offs.

I'm presently faced with a hardware challenge in my Prometheus project, so I am on the hunt for stand-offs/rivnuts/etc - whatever I can find that will make life easier and with no sacrifice to aesthetics.

Do you mind if I ask what are those standoff assemblies you are using?
Is it just a screw+nut+threaded pipe?