When a glass is missing in a piece of heavy equipment you must make a pattern. Most rubber gaskets have a 5/16" space between the rubber and the pinchweld. When you draw a pattern you must then cut the glass 5/16" smaller so it will fit in the rubber gasket. Our pattern making pencil has an aluminum ring that spaces the pencil exactly 5/16" inside the pinchweld and makes a perfect pattern. No more guessing or redrawing the pattern to fit. Made of aluminum with a collet holder that keeps the pencil in place. Clips in your shirt pocket.

WARNING: This product contains a chemical known to the State of California to cause cancer. For more information go to http://www.P65Warnings.ca.gov