This object really needs an optional scale added to it. Using this with the Linear Scale object is impossible to get right due to rounding issues. The top or bottom is always offset from the top/bottom of the analogue indicator…
Otherwise, am I missing something?
No, you’re right that the objects don’t line up well with one another, and I don’t know a good solution. I use the same idea in a couple of my projects; I have a template where I manually made a scale to fit. It was a pain to get it just right the first time, but now I can use that object any time.