09-14-2012, 07:21 AM
No problem Claude,
The tenth line is valuable, if for no other reason, than it confirming that your method of indexing has been accurate as the first and tenth vernier scale marks will need to line up exactly in line with the first and eleventh dial graduations for any of the measurements to be accurate.
And I would probably leave off one of the negative or positive scales as well in practice if I was making it but if I was specifying it to be made for a customer it would be present, that is the only reason I added it to the drawing.
In fact I did leave it off the first drawing that was lost in a bad file transfer
When I drew it the second time I just thought why not.
Regards
Rick
The tenth line is valuable, if for no other reason, than it confirming that your method of indexing has been accurate as the first and tenth vernier scale marks will need to line up exactly in line with the first and eleventh dial graduations for any of the measurements to be accurate.
And I would probably leave off one of the negative or positive scales as well in practice if I was making it but if I was specifying it to be made for a customer it would be present, that is the only reason I added it to the drawing.
In fact I did leave it off the first drawing that was lost in a bad file transfer
When I drew it the second time I just thought why not.Regards
Rick
Whatever it is, do it today, Tomorrow may not be an option and regret outlasts fatigue.