Features1. Pipe Center Locator: This pipe marking centering tool is efficient and practical for setting center lines, determining angles and marks for butt joints, locating points inside pipes or tanks, lining up keyways, and calculating inclinations. 2. Easy to operate: Step 1. Loosen or tighten the hexagonal nut using the included Allen wrench. Step 2. Place the pipe marking tool on the pipe and find the desired angle. Step 3. Push the center post down to the fixed point position. Step 4. Hit with a hammer to leave a fixed point mark on the pipe. 4. Sturdy material: The pipe installation tool can be wrapped around the circumference of the pipe for measurement and marking, and it is made of highly flexible, heat-resistant gasket material. This pipe center finder tool is easy to use and a must-have tool for pipe fitters and welders. 5. Adjustable scale bubble protractor: This pipe installation tool can help you draw straight lines around the pipe. When judging the horizontal state, the bubble of green liquid needs to be in the middle of the two lines on the protractor. Note:When determining the angle, the bubble of the green liquid should be in a horizontal position regardless of the angle.SpecificationMaterial: Stainless steel Size: 16 x 11 x 4 cmWeight: 320 gPackage Include:1x Pipe Center Finder