First, draw a circle as the external contour of the clock, as shown in the figure:

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Then we draw a circle outside this circle as the thickness of the clock outline, as shown in the figure:

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On the outer contour of the clock, we will draw the debugging wheel of the clock, as shown in the figure:

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Then we draw the minute hand, the second hand and the hour hand on the dial of the clock, as shown in the figure:

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Draw the hour hand, minute hand and second hand, and then draw the scale on the clock, as shown in the figure:

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Finally, adjust the whole drawing clock, so that our clock is drawn, as shown in the figure:

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