What is knitting tension?
What is tension? Tension for knitting is the number of stitches and rows that an average knitter will achieve to given unit of measurements, using specific yarn, pattern and needles. It is used to translate measurements into number of stitches and rows to be worked.
What is a tension swatch?
A simple practice run; the gauge swatch or tension square is an opportunity for you to test stitches and check that your finished item will end up the same size as indicated on the pattern.