PENCILMAN Marking Tape Measure - Holds any pencil or marker to 5/8" diameter - Arcs and Circles, Single handed marking, Edge slide marking, End to End marking, Transfer measurements, and more. - Versatile pencil clamp holds any pencil, pen, or marker including Sharpies. Ultra strong rinforced tape brake. Quick-release clamp allows writing with the marker. Reversible for left-handed use