Jackson Safety 14766 Curv-O-Mark Wrap-A-Round Ruler, X-Large, Grey, Tube Diameter 4" to 12"

Made of flexible gasket material with heat and cold resistance
Printed with a inch scale, inch chart, tangent chart and other useful markings
Economical tool for marking straight lines around the pipe or for use as a straight edge
Tube diameter: 4" to 12"
Available in grey colour