Using a regular compass for small circles is OK, but for projects involving larger circles or arcs, then the VERITAS® Beam Compass is the ideal solution
Ordinary compasses just don't cut it in the shop; a beam compass (or trammel) is much more practical.
Using a single beam section, the Veritas® beam compass deals with circles from 1-1/2" to 24" in diameter. Additional sections take you up to 80" (203cm) for circular tables, rockers, arches, etc. It has carbide-tipped points that readily scribe metal as well as wood, although the pencil head is usually used for scribing wood. A micro-adjust feature quickly gives accurate settings.
The VERITAS® Beam Compass comes complete, neatly fitted in a wooden case that even includes a small brass centre pivot disc for use where it is important not to mar work. The beams are steel and the fittings are all solid brass.