Reply To: Conduit diameter tolerance?

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Dropped into the wholesaler earlier to measure the diameter of some of the lengths of conduit. I was surprised by how much variation there actually is.
Some lengths were up around 25.4mm at their widest point and others were down around 24.6. General variation on diameter was then .2-.3mm when rotating the tube in the caliper.

Which diameter do you recommend picking up? 25mm exactly at the widest point?
I’m assuming I should stay away from the ones around 25.4mm as that’s basically inch conduit and I read of other people having trouble using that.