Models available jumbo size for scribing circles up to 80 diameter;Folding type design - three smallest models will fit conveniently into a shirt pocket;Sturdy friction joints maintain rigidity and accuracy, and are made from lightweight, rustproof aluminum for long wear;Soapstone crayon is included. The scribe holder will accept round, square or flat soap stone crayon, pencil or steel point scribe

• Jackson Safety 14783 Curv-O-Mark Jumbo Contour Markers, 40 Radius

Jackson Safety 14783 Curv-O-Mark Jumbo Contour Markers, 40 RadiusKimberly-Clark Professional