Off by .5mm

As I was knitting and watching Bones tonight, I realized something.

I've been using the wrong needle size.

See, the recipe for the Celtic Knot Afghan calls for US 10.5 /6.5mm needles. I grabbed what I thought was my US 10.5 circs, cast on, and have been happily knitting this thing for a week. I am a row or two away from finishing the first repeat of 40 rows.

What I grabbed was my US 10/6.0mm circs. It's not that much of a difference, though my gauge may be a bit off (I'm curious to know what the gauge is myself, actually).



Edit: This Friday afternoon I went to the nearest yarn store, where I reluctantly bought the correct size needle. Reluctantly, as Addi Turbos were the only needles in stock (and Susan Bates are much cheaper), and as I am really not looking forward to frogging this beast.