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Manual gear alignment - Tooth one?

Hi all,

I was asked to finally figure out PC-DMIS Gear 2.5 (we bought it well over 2 years ago, and haven't used it yet). I think I'm doing ok working my way through it, but I'm a little hung up on the manual alignment.

I'm good up until it asks me to probe a hit on the left side of tooth one (and the right side of tooth one). The problem is that I have no idea which tooth "one" is. I tried the tooth at the 0° (X+) position, and at the 270° (Y-) position with no luck.

I looked at the execute window and the XYZ and IJK values don't really line up. The left side of tooth one probe hit is supposed to be at an I of 1 (approximately) but at X 2.2xxx, Y0.9xxx which doesn't make a whole lot of sense to me.

Can someone elaborate on what the gear software is trying to tell me? I looked through the help manual, but not much luck on the "tooth one" issue.

Thanks.