Thread: Rod Guide Question

When you measure a guide to see what size to order, is it inside or outside diameter? Dumb question I guess, but I don't know....

I go by the chart.

https://www.jannsnetcraft.com/Conten...zing_chart.pdf

Never have wondered if it's inside or outside, guess I never ordered one that close. If you print it you can lay one on it and compare. Seems like it would have to be inside, the outsides vary so much.

Edit: Now that I read, there are instructions under the diagram.

The guide sizing chart shows two circles for each size. The large outer rings represent the inside of

the guide frame. The smaller inside rings represent the inside of a ceramic ring.
For guides made without or missing a ceramic ring, use the outer ring to match the guide.
For guides with a ceramic ring, use the smaller circles to match the inside of your ceramic rin

Thanks for the link.