http://www.calculated.com/ptp See how easily the Pipe Trades Pro pipefitter's calculator by Calculated Industries can give you fitting takeouts and cut-mark solutions for factory and field-cut butt-weld elbows. It gives you the inner, center and outer arc lengths for marking your field cut fittings. A great tool for pipefitters, steamfitters, sprinkler fitters, pipe welders or anyone that does pipe cutting and pipe welding. This quick overview briefly shows how to use this pipe trades calculating and reference tool to do all your project related calculations and conversions far more quickly, simply and accurately. Spend less time looking at charts and tables and more time setting pipe! For more information or to find the dealer nearest you call 800-854-8075 or go to http://www.Calculated.com