855 B
855 B
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| Notches |
There are two types of notches. The default notch is a dot in a circle.
An alternative style shows a cross in a circle. This style is used to indicate the back of a garment. For example, on a sleevecap you may see a dot and a cross notch. This way you know which side of the sleevecap is the back (the one with the cross notch).
Why we chose these notches
In electromagnetism, a ⊙ symbol is used to indicate a flow of current coming towards you (to the front), whereas ⊗ is used for a current moving away from you (to the back).
You can also think of an arrow. When an arrow flies towards you, you see its tip (⊙). When an arrow flies away from you, you see its fletches (⊗).