On 1/23/2017 11:54 PM, DoN. Nichols wrote:
If you have a scanner, put the gear flat in the middle of the
scanner's plate, and scan it. That will probably be as good an image as
you can get, and will make sure that the "camera" is square with the
gear.

Use the highest resolution (maximum DPI setting) on the scanner.
...

That is a good idea! Why didn't I think of that?

I did do a scan, at 1200dpi (not max) and got a great image:
http://imgur.com/Zi8ZueK

Not exactly straight-on, probably because I had it at one end of the
scanner. It blows-up nicely:
http://imgur.com/jrykApV

Thanks,
Bob