Taz ~
I was joking earlier about having to go to the tool box ten times just to find the right bolt. I'm actually pretty good with tools and such, and can measure and cut the prettiest straight edge with a Skil saw that you ever saw (no pun intended). I'm just a little slow when it comes to doing actual math in my head. I understand now that the pipe gauge I just posted is not metric. But what I don't understand is why the website where it can be ordered says that it 'is' metric?
But let's forget about the whole metric business for the moment, and even forget about 32nds vs 64ths. And instead focus on the similarily progressive numbers which appear on both Mojjax's gauge and the pipe gauge that I just posted. Those numbers being 24 - 28 - 32 - etc. With my new question being this ...
(see my post #27 where it shows both the chart from the catalog and Mojjax's gauge).
Since most (and possibly all) of these various types of gauges have similar progressions on them (24-28-32-etc.) does this mean that the numbers on Mojjax's gauge and the numbers on the chart match perfectly, or is it just coincidence?
In other words ...
Are we 1,000% sure Mojjax's gauge is for measuring seed screens?
or ...
Is it possible that Mojjax's gauge is for measuring inside pipe diameters?
If I had to vote on this, I'd say ... "Screen Gauge"
However ...
At this juncture I cannot "prove" it 1,000%!

Can anyone?
Hey Mojjax ~
Good to see you again. Maybe it's time to throw in the towel and contact the company.
What say you?
I will even do it for you if you want. Just say the word and consider it done.
SBB