NIST Physical Measurement LaboratoryThe Physical Measurement Laboratory (PML) is comprised of all of the Physics Laboratory, most of the Electronics and Electrical Engineering Laboratory, and parts of the Manufacturing Engineering Laboratory, the Chemical Science and Technology Laboratory, and Technology Services. PML develops and disseminates the national standards of length, mass, force and shock, acceleration, time and frequency, electricity, temperature, humidity, pressure and vacuum, liquid and gas flow, and electromagnetic, optical, microwave, acoustic, ultrasonic, and ionizing radiation. Its activities range from fundamental measurement research through provision of measurement services, standards, and data.
