We built several systems coupling multiple linear micrometric stages. I can't find a standard defining the axis convention of these kinds of systems, it there are any.
Regarding the system on the left, I would say that is an XZ system while I would define the system on the right XY system. However, I can't find any standard where this convention is explicitly stated. For us, this is very important because we want to define univocally the various categories that we developed. Is there any ISO standard? Or best practice I can use as reference this convention?