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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.

Foreword

EPO 1-Retail Computing Scales 

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 14-Belt-Conveyor Systems

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 16-Appendix C Definitions

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 25-Loading-Rack Meters

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

Created May 7, 2015, Updated October 7, 2024