Other than a two dial tramming tool, what other tool or tools might be used to measure z-axis repeatability? I don't currently have a tramming tool, so I tried using a digital weight scale, which would work fine if repeatability were perfect, but otherwise it's hard to know how to convert grams into distance.
I thought about using a dial indicator, but where to attach it?
Then I thought about using a dial test indicator. Maybe?
What else might be used?