- Made of high quality carbon steel, good toughness, high hardness, sturdy and durable, wear-resistant, accurate measurement.
- Heavy duty & good construction, a great tool for doing large carpentry work, scribe, drafting, drawing circles, metal work, and leather work.
- Lockable wing provide quickly measure, copy measurement, repeat measurement, measurement transfer and repeated circle drawing.
- The tips are hard and sharp, they can clearly & easily draw lines on the surface of metal, plastic, wood and other workpiece.
- The leg is 12.0 inches long, the maximum span (Radius) is 16.2 inches, and maximum drawing circle diameter 32.0 inches.