There are a lot of times when we might need two pieces of knitting to come out the same length. Two socks, for example, should be the same length, as well as two sleeves of the same sweater. Cardigan fronts, the front and back of a sweater or a pair of mittens or gloves should also usually have the same row count in each piece.
While there are lots of great ways to keep track of what row you're on in a knitting project, I'm prone to forgetting to make the mark on a piece of paper when I need to or not hitting the button when I should.
So I decided to try a slightly sneakier version of counting rows, involving locking stitch markers.
All you have to do is hook one of these onto the first stitch on your needle when you start a section that you need to keep track of the number of rows on. Then add another (they may sometimes go at the beginning of the row and sometimes at the end to make them all on the same side of your work) at a predetermined interval that you can reasonably count. I put markers every 5 rows.
Then when you're knitting the other side, sock or piece, all you have to do is count by fives, plus any extra rows, and do the same counting trick on the other side. You can even take the markers off the first side and put them on the second side as you go, so you'll know when you run out of markers on the first side you have to knit any extra rows and then you're done.
This is a relatively easy way to make your knitting more accurate and make sure your two pieces that need to be the same length actually are.