So what this gauge that i see in the patterns? what is its usefulness?

In sewing and knitting, the gauge of a pattern is the number of stitches and rows per inch (or centimeter) achieved by using a particular yarn and needle or hook size. The gauge is important because we determine the finished size and fit of a garment or project.

To determine the gauge of a pattern, it is necessary to create a sample using the specified yarn and needle or hook size. The swatch should be large enough to measure accurately, typically at least 4 inches (10 cm) square.

The number of stitches and rows in the sample are then counted and compared to the gauge specified in the pattern. If the stitch and row counts match, then the gauge has been achieved and the pattern can be followed as written. If the stitch and row counts do not match, adjustments may need to be made to achieve the correct gauge.

Let's say , you have a pattern with a specific gauge but you want to use your yarn which is different from the specific yarn in the pattern. The only thing you need to make this adjustment is this specific gauge. Use the same number of stitches and row that the gauge of the pattern gives you, but you use different hook. If your sample is very big then go down to hook size and the opposite, if your sample is small then you use bigger hook size. The important thing here is your sample meet the gauge of the pattern. For example:

You have a gauge of a pattern that sais: 18 sts x 10 rows = 10 x 10 cm (4 x 4 in.) with 3mm hook size. You want to use other yarn than the pattern then you take the gauge and make a sample with 18 sts x 10 rows with 3mm. If your sample is 10 x 10 cm then ok. If it is smaller than 10 cm then you have to make again another sample using bigger hook (try with 4mm this time). If it is bigger then you have to make another sample using smaller hook (try 2.5m or 2mm hook size). Continue like this until your sample meet the gauge of the pattern.

Another thing with the gauge is that having it you can calculate your stitches. There are patterns that give the gauge and a chart size with cm but doesn't say anywhere what are you initial chains in your size. Don't worry! You have the gauge for it! You can find your initial stitches with the method of 3. For example:

In the pattern is given the gauge which is : 18 sts x 10 rows = 10 x 10 cm. And the instructions say that for the S size is 40 cm. Ok, we don't have the initial chains, so we will figure it out ourselves.

Method of 3: 18 sts are 10 cm 

                       ? sts are 40 cm

? = 18 sts x 40 cm / 10 cm = 72 sts. So the S size need 72 initial chains.

You can use the method of 3 in everything in crochet to find the final sts or the inc/dec of a row etc. Once you understand this , then everything is easy, as long as you have a gauge!!

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