NBS Special Publication, Issue 250

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U.S. Government Printing Office, 1965

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Page 3 - THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates that system with measurement...
Page 3 - Bureau is a principal focal point in the Federal Government for assuring maximum application of the physical and engineering sciences to the advancement of technology in industry and commerce. To this end the Bureau conducts research and provides central national services in four broad program areas.
Page 97 - Standard Reference Materials issued by the National Bureau of Standards to calibrate a measurement system, or to produce scientific data that can be referred to a common base. A schedule of prices and amounts, as well as directions for ordering, is included.
Page 8 - States for a complete and consistent system of physical measurements, coordinates that system with the measurement systems of other nations, and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce.
Page 6 - Laboratory is the central agency of the Federal Government for obtaining, analyzing, and disseminating information on the propagation of radio waves at all frequencies along the surface of the earth, in the atmosphere, and in space.
Page 41 - ... index markers. Since it is necessary to determine the shift of the principal point resulting from prism effect in the lens, the equivalent focal length of the lens as mounted In the camera is incidentally determined...
Page 8 - Laboratory 1 is to act as a central agency of the Federal Government for the collection, analysis, and dissemination of information on the propagation of electromagnetic waves, on the related electromagnetic properties of the atmosphere, on the nature of electromagnetic noise and interference, and the methods for the more efficient use of the electromagnetic spectrum for telecommunications purposes. 200.101 Calibration and test services. Policies on calibrations and other tests performed by the...
Page 41 - ... wire loops, spring balances, tension handles, or other attachments liable to be detached or changed in shape. The error in the total length of the tape, when supported horizontally throughout its length at the standard temperature of 68 F. (20 C.) and at standard tension, shall not be more than 0.1 inch per 100 feet (2 mm per 25 m).

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