Guardian Fountain Pen Nib Help!

[Mapster]

I am ordering a Guardian fountain pen for a customer who wants an upgraded nib. I unfortunately do not know the size of the nib it uses. Help would be greatly appreciated :biggrin:

 

[76winger]

The PSI site didn't state what size nib it uses, but I did see the pen only uses an 8mm tube, which is still smaller in size. Thus I would GUESS that it uses the smaller #5 nib. But I would rather hear from someone who's made some and knows for sure before committing to purchasing a nib for it.

 

[Mapster]

Thanks Dave, but it is actually a 9/16" upper tube and a 27/64" lower. The 9/16" however is slightly larger than our Jr. series pens, which makes me wonder if it is a 5 or 6 nib. Hopefully someone that has made one can help us out!