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OWM Examination Procedure Outlines (EPOs)
The following Examination Procedure Outlines (EPOs) in this collection are current to the 2015 edition of NIST Handbook 44. Some of the EPOs that appeared in the original version of NIST Handbook 112 (2002) have not been updated and are not included in this collection.
EPO 5-Prescription and Jeweler Scales – Part 1 Electronic
EPO 5-Appendix A – Table 1 Units of Mass Conversion Tables (1) – Carat (Metric) to Grams (Excel File)
EPO 5-Appendix A – Table 2 Unit of Mass Conversion Tables – Pennyweight (Troy) to Grams (Excel File)
EPO 5-Appendix A – Table 3 Units of Mass Conversion Tables (3) – Pounds (avoirdupois) to Grams (Excel File)
EPO 5-Appendix A – Table 4 Units of Mass Conversion Tables (4) – Ounces (avoirdupois) to Grams (Excel File)
EPO 5-Appendix A – Table 5 Units of Mass Conversion Tables (5) – Ounces (troy) to Grams (Excel File)
EPO 7-Medium – Capacity Scales
EPO 9-Part 1 – Monorail Scales – Electronic Digital Indicators Part 2 – Monorail Scales and Meat Beams – Mechanical
EPO 12-Livestock and Animal Scales Part 1 – Electronic Digital Indicating Part 2 – Mechanical – Analog Indicating
EPO 13-Vehicle and Axle-Load Scales Part 1 – Electronic Digital Indicating Part 2 – Mechanical-Analog Indicating
EPO 16-Automatic Bulk Weighing Systems
EPO 16-Appendix A Description of Test Methods
EPO 16-Appendix B High-Level Steps to Performing the Increasing-Load Test Using the Substitution or Alternative Substitution Test Method
EPO 16-Appendix B/Supplement 1 Applying the High-Level Steps of the Substitution and Alternative Substitution Test Method
EPO 16-Appendix B/Supplement 2 Determining Scale Error When Applying the Substitution Test Method
EPO 16-Appendix B/Supplement 3 Determining Scale Error When Applying the Alternative Substitution Test Method
EPO 21-Retail Motor-Fuel Dispensers Single, Dual, and Multi-Product (except blenders)
EPO 22-Retail Motor-Fuel Dispensers – Blended Products
EPO 23-Vehicle-Tank Meters (VTMs) – Power-Operated
EPO 24-Vehicle-Tank Meters (VTMs) – Gravity-Discharge
EPO 26-Liquefied Petroleum Gas (LPG) Liquid-Measuring Systems
EPO 28-Compressed Natural Gas (CNG) Retail Motor-Fuel Dispensers
EPO 29-Hydrogen Gas Retail Vehicle Fuel Dispensers
EPO 30-Retail Electric Vehicle Fueling Systems (Rev Nov 2024)