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Physical Measurement Laboratory

Office of Weights and Measures

NIST Associates for OWM

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Click on the photos below to view the biography webpage.

NIST Associates

Yvonne Branden Headshot
Yvonne Branden, Laboratory Metrology Program
Tina Butcher - Headshot
Tina Butcher, Training Specialist, OWM HQ
Lisa Corn OWM Associate
Lisa Corn, Metrology Instructor, Laboratory Metrology Program

 

Chuck Ehrlich, Program Leader, International Legal Metrology
Chuck Ehrlich, Physicist, OWM HQ
Female employee silhouette wearing suit
Joanne Krumel, Educational STEM Outreach Coordinator, Metric (SI) Program
Headshot of Wilson Ombati Nyangau
Ombati Wilson Nyang’au, Electrical Engineer, Laboratory Metrology and International Legal Metrology Programs
Ralph Richter
Ralph Richter, Engineer, International Legal Metrology Program
Mark Ruefenacht Head Shot
Mark Ruefenacht,  Metrology Instructor, Laboratory Metrology Program
Staff photo of Scott Simmons
Scott Simmons, Training Specialist, OWM HQ
Kate Smetana Headshot
Kate Smetana, Metrology Instructor, Laboratory Metrology Program
Jose Torres-Ferrer, OWM Metrology Instructor
Jose Torres-Ferrer, Metrology Instructor, Laboratory Metrology Program
Photo of Yoon Thwel
Thwel Yoon, 2025 Montgomery College PREP Intern, Metric (SI) Program

Previous NIST Associates and Student Interns

Maryanne Amanze, Metric (SI) Spring 2024 Montgomery College Intern
Maryanne Amanze, 2024 Montgomery College PREP Intern, Metric (SI) Program
Photo of OWM Intern Lloyd Bekele
Lloyd Bekele, 2023 Montgomery College PREP Intern, Metric (SI) Program
María Peñahora Cañeque Simón
María Peñahora Cañeque Simón, International Legal Metrology Program
 
 
 
Photo of Cyra Golwalla
Cyra Golwalla, Administrative Assistant and Salesforce Expert
nelka Jagoda, Metric (SI) Spring 2024 Montgomery College Intern
Dinelka Jagoda,  2023 and 2024 SURF Fellow, Metric (SI) Program
Photo of OWM Intern Arghavan (Angie) Tehrani
Arghavan (Angie) Tehrani, 2023 Montgomery College PREP Intern, Metric (SI)
Ben Tran OWM 2023 SURF Student
Benjamin Tran, 2023 SURF Fellow, Metric (SI) Program
Wendy Rocio Calle Villarroel
Wendy Rocio Calle Villarroel, Metrologist, National Legal Metrology Program
Headshot of Travis White 2023
Travis "TJ" White, 2022 and 2023 SURF Fellow, Metric (SI) and Laboratory Metrology Programs
Metrology, Metric and Weights and measures

Contacts

Created March 30, 2022, Updated September 26, 2025
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