I ran across some patterns that call for 20 stitches per inch. I don’t have that setting on my machine. All I have is numbers from 0.8 to 5.0. So I printed a ruler on a piece of paper and started from 0.8 and sewed a one-inch line, counting the stitches as I went, then went to the next number up and so on. I made a chart with the stitches length to go back to for reference. These numbers are approximate, so please don’t be mad at me if they are not the same on your machine. I have a Singer Quantum Stylist 9960 and I used a #14 needle.