18sts = 4inches
I am doing my gauge, yippie.
The pattern calls for 18 stitches to equal 4 inches. The yarn states 18 stitches will equal 4 inches on a size 7 needle.
I had to move up to a size 9 needle to get 18 stitches to equal out to 4 inches. (this is a garter stitch pattern, I counted the bottom bumps on the stitches)
I got gauge, should I worry about having had to move up two needle sizes? The sample looks good, doesn't look loose.
So, in this case it is not a certain number of stiches per inch, but a total of 18 stitches equaling 4 inches.