On 1/21/2017 2:04 PM, David Billington wrote:
There are some programs or javascripts on the net which will generate
gear profiles such as http://woodgears.ca/gear_cutting/template.html and
others so maybe try a few and print off the result to compare with. ...

Thanks - I tried that. It took about 6 attempts to get it printed at
full size, but it did. The problem was resolution: these teeth are only
3mm deep and 5mm pitch, so trying to match profiles is really hard. It
did look like 20 degree PA, though.

Bob