Alignment by Coordinate System v.s. Alignment by Geometric Elements

[[Ry...]]

Hello All,

I am new to the software, went through the training about 2 months ago. Wondering what the difference between alignment by coordinate system and alignment by geometric elements is?

Using both methods on the same part, I am noticing the part doing some significant walking around on it's butt end when alignment by coordinate system is applied. When I apply the alignment by geometric elements, the part is much more stable & consistent. 

Looking at the few projects that our company had contracted by Zeiss, we noticed that they are always using the geometric elements alignment. So we are assuming this is the correct way to do it, but we want to understand the difference. I would think that if you are selecting the same elements in the coordinate system as the alignment by geometric elements, you would not have a difference.

Thanks in advance to anyone who responds.

 

Ryan

[[DW...]]

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 Just curious, what training did you attend?

[[Ry...]]

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 Our company just acquired a Metrotom 130Kv & I took the on site training that came with it. 

Do you know what it could be? If there is a difference, I did not catch what it was.