Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Taking Measure

Just a Standard Blog

David Sefcik

David Sefcik is a technical expert on uniform laws and regulations in the area of legal metrology with the NIST Office of Weights and Measures. A Maryland native, David graduated from the University of Maryland, College Park. In addition to being the lead trainer on Handbook 130 and Handbook 133, he has taught Sunday School to elementary-age children for more than 20 years.

The Unit Price is Right

Believe it or not, I love to grocery shop. Besides getting to pick all my favorite foods, I love the challenge of getting the best deals—and a challenge it can