Moving on from our introduction post on swatching, here we are going to learn how to block and measure a swatch.
A gauge swatch (sometimes known as a tension square) should be around 6 inches square (15 cm square). This allows you to avoid the edges of your work where the stitches are more likely to be uneven and will give you an inaccurate result.
So if the gauge was supposed to be 20 sts = 4”/10cm you would cast on 30 sts for your gauge square.
Now if you are wondering about how to knit a circular swatch check out my next video here.