Which statement describes the role of NIST as described in the material?

• A. It regulates laboratory licensing.
• B. It is a measurement standards laboratory that provides weights and measures services; publishes Handbook 44 with specs and tolerances.
• C. It is a private company selling instruments.
• D. It regulates environmental compliance.

Answer: (C)

NIST, the National Institute of Standards and Technology, is a U.S. government agency focused on developing and maintaining measurement standards and the technology to support them. It serves as the national reference for weights and measures, offering calibration services and disseminating measurement data so that devices and methods are accurate across science, industry, and commerce. A key part of its work is publishing Handbook 44, which contains the specifications, tolerances, and other requirements for weighing and measuring devices used in trade. This guidance helps ensure uniformity and fairness in commerce nationwide by establishing how devices must perform. NIST is not a private company selling instruments, nor does it license laboratories or regulate environmental compliance; those roles are filled by other entities in government or industry.