11.8 inch Round Center Finder: The center finder compass can find the center point on irregular items with a diameter of 300 mm/ 11.8 inches, you can easily find the largest circle.Easy to Read: Laser marking and the scale mark will not be worn after long-term use, marked circles in 1mm increments, The circle center finder tool helps produce maximum yield on logs smaller than 300mm in diameter.Premium Material: The lathe center finder is made of clear acrylic with a central hole and clearly marked circles, which allows you to see exactly what you are doing and helps you measure quickly and easily.Multipurpose-Use: The lathe center finder works on wood, poster board, plastic, metal, glass, composites and more.The round center finder tool is perfect for wood turners, arts, crafts, school projects and more.Easy To Use: Set the round template on the piece, move it till you are happy with the center, mark the center with a pencil or sharp point and then you can use the compass to scribe the circle.