Mandrel Bend Tube Protractor / U Bend Cut Angle Finder Tool Tube Diameter: 1.75in Bend Centerline Radius: 2.5in Use this Tube Protractor to measure out the angle of a cut on a mandrel bent tube. The Tube Protractor can be used as a standalone tool to measure out 5° increments, or it can be used as a jig in combination with a digital protractor (not included) for precision angle measurement. - This listing is for a single Tube Protractor tool only. The mandrel bent tube and supplemental protractors shown are for reference only and are not included. - The rotating Arm has hard stops at +/-90° to aid in marking the beginning and end of a bend. - Index features for marking tube centerlines at the 3, 6, 9, and 12 O’clock positions along the bend. - Graduated coarse 5° markings on the Tube Protractor Body and Arm. Inch markings on the straight tube sections. - Index features to aid in using supplemental digital or analog protractors for precision angle measurement. - The side of the Arm with degree markings is used for marking the cut. The opposite side of the arm has a ledge for supporting a supplemental protractor. - The pictures show some samples of this item in various sizes. Actual item may vary in size and color from what is shown. - The colors are assorted and may vary from what is shown. - This item includes one protractor body and one arm in the selected size. - Additional sizes that are not listed are available on request. - Please allow up to five business days to ship. - This tool is 3D printed in the USA. - More info: https://youtu.be/D_vEg_SNitg?si=FoZZ4EJNVF5HEf2G