The easiest way to make a clock face with a compass is to use the tracing wheel on the back of the compass. Draw a circle on paper that is the same size as your clock face, and then trace around the edge of the circle with the compass tracing wheel.
If you want to be more precise, you can also print out a circle template from online resources or pick up one at a hardware store. Once you have your circle template, use a pencil to draw straight lines across each corner of the template. Then position the compass over each line and align it so that its blade points towards the center of the template.
To finish off your circle clock face, trace around each edge of the template with the compass, using these lines as your guide. Be sure to smooth out any rough edges that remain after you’ve completed this step.