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.

Projects/Programs

Displaying 1 - 25 of 60

Antenna Metrology

Antennas are the eyes, ears and voices of everything from cell phones to interplanetary spacecraft. The Antenna Metrology Program carries on PML's pioneering

Aperture area measurements

Radiometric and photometric measurements require defining apertures. The accuracy to which these measurements can be accomplished requires minimization of the

Calibration of Force Transducers

NIST provides calibration services for force-measuring instruments by applying known forces, compression, tension or both, to the elastic transducer and

Calibrations: Neutron Source Strength

The neutron source calibration facility operated by NIST is a world-class calibration laboratory providing neutron source calibration services for radioisotopic

Color and appearance

We are developing instrumentation, standards artifacts, and measurement protocols to characterize appearance attributes including color, texture, and gloss