General Tools 842 Precision Pencil Compass, includes pencil CARPENTER QUALITY  this pencil compass is a carpenter quality precision tool made of long lasting die cast and a rust resistant metal 9 INCH JAW CAPACITY  not only is this compass a robust scribing and marking tool, it has a spring tension adjustment for marking up to 9(229mm) diameter PIVOT SPRING HANDLE  the swivel spring handle of this compass makes this a great tool for making contours and circles SCRIBE GUIDE  is used for edge marking PENCIL INCLUDED  compass can be used with the included pencil or with a slim ballpoint pen