Tools and Instruments

Displaying 1 - 12 of 12

NIST's million-pound deadweight stack, assembled

4.45 MN Deadweight Force Generating Machine (Million Pound Force Dead Weight Machine)

The largest of 6 NIST deadweight force generation machines, the 4.45 MN Deadweight Force Generating Machine can apply 20 equal force increments of 222 kN (or

Plot of aluminum oxide photodetector typical responsivity in the EUV.

Aluminum Oxide EUV Photodetector Transfer Standard

Aluminum oxide (Al 2O 3) photodiodes are issued by NIST as transfer standard detectors in the extreme ultraviolet spectral region (5 nm to 125 nm). Each device

Center for High Accuracy Retroreflection Measurements (CHARM)

In 1993, the United States Congress directed the U.S. Department of Transportation to establish "a standard for a minimum level of retroreflectivity that must

Gravimetric Hygrometer

The NIST Thermodynamic Metrology Group has built a second generation gravimetric hygrometer, and a description of the hygrometer was published in Metrologia. A

Lunar spectro-radiometer

Design of the lunar irradiance instrument is based on commercially available spectrographs. These spectrographs can be stable and sub-components are readily

aperture area measurement (AAM) instrument

Optical Aperture Area and Coordinate Measurement Facility

NIST has established an absolute aperture area measurement facility primarily intended for area calibrations of defining apertures used in radiometric

Primary optical watt radiometer (POWR) facility

POWR is a cryogenic electrical substitution radiometer that serves as the Nation's optical power reference.

Plot of Si photodiode typical responsivity in EUV

Si EUV Photodiode Transfer Standard

Silicon (Si) photodiodes are issued by NIST as transfer standard detectors throughout the extreme ultraviolet spectral region (5 nm to 254 nm). Each device is

SIRCUS facility and uncertainties

The basic SIRCUS calibration setup is shown at the right. The output from a tunable laser is sent through an intensity stabilizer, then through a 'speckle

Spectral comparator facilities

Ultraviolet spectral comparator facility (UV SCF) The UV SCF is capable of measurements from 200 nm to 1800 nm, but it is optimized for the measurement of

Stylus Profilometer

The Taylor Hobson Form Talysurf PGI 1240 is a mechanical stylus profilometer for surface texture and microform measurements. Its primary purpose is for the

Telescope calibration facility (TCF)

The Telescope Calibration Facility (TCF) was designed to support the NIST Stars project by providing a facility to radiometricly calibrate long focal length