Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Staff and Technical Experts Directory

OWM Organization Chart PDF - (Rev. 2020 February 12)

Type of Information
Who to Contact Telephone
Weights & Measures - General
General Inquiries Barbara Turner 301-975-4004
Administration
History
U.S. System
Ken Butcher 301-975-4859
Tina Butcher 301-975-2196
Laws & Regulations
Packaging and Labeling
Precious Metals Conversion
Price Verification
Retail and Unit Pricing Laws
Net Quantity of Contents
Ken Butcher 301-975-4859
David Sefcik 301-975-4868
Lisa Warfield 301-975-3308
Engine Fuel Quality & Biofuels Ken Butcher 301-975-4859
Metric Information Elizabeth Benham 301-975-3690
Ken Butcher 301-975-4859
OIML Packaging Ken Butcher 301-975-4859
Publications
NIST Handbook 105 Series, Specifications & Tolerances for Field Standards Val Miller 301-975-3602
NIST Handbook 44, Specifications, Tolerances and Other Technical Requirements for Weighing and Measuring Devices John Barton 301-975-4002
Tina Butcher 301-975-2196
Rick Harshman 301-975-8107
Diane Lee 301-975-4405
Juana Williams 301-975-3989
NIST Handbook 112, Examination Procedures Outlines for Commercial Weighing and Measuring Devices Tina Butcher 301-975-2196
NIST Handbook 130, Uniform Laws and Regulations in the Areas of Legal Metrology and Fuel Quality
NIST Handbook 133, Checking the Net Contents of Packaged Goods
David Sefcik 301-975-4868
Lisa Warfield 301-975-3308
Measuring Systems
Metering Devices - General & Other Tina Butcher 301-975-2196
Diane Lee 301-975-4405
Juana Williams 301-975-3989
Electric Vehicle Refueling Tina Butcher 301-975-2196
Juana Williams 301-975-3989
Electric Watthour Type Electric Meters Tina Butcher 301-975-2196
Lisa Warfield 301-975-3308
Cryogenic Measuring Devices & OIML R81 Juana Williams 301-975-3989
Gas Pumps (Retail Motor Fuel Dispensers) Tina Butcher 301-975-2196
Diane Lee 301-975-4405
Juana Williams 301-975-3989
Hydrogen & Compressed Gases Juana Williams 301-975-3989
Liquefied Petroleum Gas (LPG) Meters Tina Butcher 301-975-2196
Loading-Rack Meters Tina Butcher 301-975-2196
Diane Lee 301-975-4405
Juana Williams 301-975-3989
Mass Flow Meters Tina Butcher 301-975-2196
Diane Lee 301-975-4405
Juana Williams 301-975-3989
Master Meters Val Miller 301-975-3602
Small Volume Provers
General Field Use Diane Lee 301-975-4405
Calibration, Witnessing Val Miller 301-975-3602
Vehicle-Tank Meters Tina Butcher 301-975-2196
Diane Lee 301-975-4405
Juana Williams 301-975-3989
Weighing Systems
Weighing Devices - General John Barton 301-975-4002
Rick Harshman 301-975-8107
Automatic Weighing Systems & OIML R51 Rick Harshman 301-975-8107
Ken Butcher 301-975-4859
Belt-Conveyer Scales & OIML R50 John Barton 301-975-4002
Hopper Scales, Auto Bulk Weighing & OIML R107 Rick Harshman 301-975-8107
Ken Butcher 301-975-4859
Load Cells & OIML R60 John Barton 301-975-4002
Ken Butcher 301-975-4859
OIML R76 Non-Automatic Weighing Instruments Rick Harshman 301-975-8107
Ken Butcher 301-975-4859
Railway Track Scales & OIML R106 John Barton 301-975-4003
Ken Butcher 301-975-4859
In-Motion Weighing-General & OIML R134 (Vehicle) Rick Harshman 301-975-8107
Uncertainties - Balances and Scales Val Miller 301-975-3602
Other Device-Related Topics
Grain Moisture & Protein Analyzers & OIML R59 Diane Lee 301-975-4405
Livestock Carcass Measuring Systems Diane Lee 301-975-4405
Multiple Dimension Measuring Devices Rick Harshman 301-975-8107
Taximeters, Transportation Network Measuring Systems, and Odometers & OIML R21 John Barton 301-975-4002
Training
General Training Yvonne Branden 301-975-3272
Laws & Regulations - Related Ken Butcher 301-975-4859
Laboratory Metrology - Related Isabel Chavez 301-975-2128
Device - Related Tina Butcher 301-975-2196
Laboratory Metrology
Laboratory Technical Assistance - General Val Miller 301-975-3602
Isabel Chavez 301-975-2128
Micheal Hicks 301-975-4615
Calibration Procedures
Measurement Traceability
Val Miller 301-975-3602
Proficiency Testing Micheal Hicks 301-975-4615
Val Miller 301-975-3602
Quality Management Systems Isabel Chavez 301-975-2128
State Lab Program & Recognition Isabel Chavez 301-975-2128
Micheal Hicks 301-975-4615
Uncertainties Val Miller 301-975-3602
Communications
OWM Newsletter Breyanna Blackwell 301-975-3998
Publications Management (NIST, NCWM)
Calendar of Events Yvonne Branden 301-975-3272
Database - OWM Contacts System
International Legal Metrology (OIML) Chuck Ehrlich 301-975-4834
Ralph Richter 301-975-3997
Katya Delak 301-975-2520
Weights and Measures Website

Breyanna Blackwell

301-975-3998
Yvonne Branden 301-975-3272
National Conference on Weights & Measures (NCWM)*
Executive Secretary Douglas Olson 301-975-2956
Laws & Regulations Committee Lisa Warfield 301-975-3308
Professional Development Committee Tina Butcher 301-975-2196
Specifications & Tolerances Committee John Barton 301-975-4002
Diane Lee 301-975-4405
NTEP Software Sector Katya Delak 301-975-2520
NTEP Grain Analyzers Sector Diane Lee 301-975-4405
NTEP Measuring Sector Tina Butcher 301-975-2196
NTEP Taximeters John Barton 301-975-4002
NTEP Belt Conveyer Sector John Barton 301-975-4002
NTEP Weighing Sector Rick Harshman 301-975-8107
Created May 18, 2011, Updated April 2, 2020