Gagemaker’s MRP® 5B Calculator allows you to calculate ovality and standoff of your API 5B connections based on your crest diameter readings. Formulas and data comply with the Sixteenth Edition of API 5B. Simply input the values from your inspection with an MRP® crest diameter and ovality gage and our calculator will provide you with the ovality and standoff, as well as inform you that these results meet the published requirements.