Contour Wrap-A-Round 3" - 6" Black No.164B Curv-O-Mark

An inexpensive tool for marking straight lines around pipe or for use as a straight edge. These are suitable for temperature to 350°C. (Other types for higher temperatures also available.) Printed with metric scale and pitch chart, tangents and other markings.
Pipe Diameter : 3 to 6"
Width x Length : 164B (metric) 3.88" x 4'