The name of this tool is shared with an instrument used in navigation.

You might have used a compass in a drafting class in school. It might have a pencil at one end and a sharp point at the other for widening out to draw perfect circles. In woodworking, a compass or divider may be used relatively the same way - for ensuring perfect symmetry when dividing wood up into equal sections.

Asked by Jennifer Sinclair · Last updated 5 years ago · 610.5K views · SOURCE