Step one. You can draw a circle by hand, but it is better to use some round object. For example: the cap or tape. You can take a CD, it is not very important. The main thing, you must have the subject of two round one more, second less.
Step Two. You put them on paper and contours contours. The second round is important to put so that around him were equal to the great circle distance. It must be exactly in the middle.
Step Three. Draw alarm bells.
Step Four. Now the legs.
Step Five. And dial.
Step Six. Only the numbers do not mix.
Step Seven. It remains to add arrows. Beauty: