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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: National Bureau of Standards Reports
 Collection: Technical Report Archive and Image Library
Standard Time Zones of the United States and adjacent Parts of Canada and Mexico as of October 1, 1935
One map showing standard time zones of the United States as of October 1, 1935, with an updated map showing new boundaries in Georgia, Ohio, and Michigan. Notes on the first map describe the changes effective September 27, 1936 and November 23, 1941. digital.library.unt.edu/ark:/67531/metadc100686/
Map of Standard Time Zones of the United States and Adjacent Parts of Canada and Mexico as of January 1, 1948
Map of the United States and surrounding areas with time zones marked and labeled in red. Bodies of water are marked, with depth marked by hatchures, as well as state lines and major cities.. digital.library.unt.edu/ark:/67531/metadc100693/
Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis
Report with two nomograms presented for rapidly obtaining the compound composition of hydrated limes from the oxide analysis. The general nomogram can be applied to any commercial hydrated lime and gives values accurate to within 0.3 percent while the special nomogram is applicable only to regularly hydrated and highly hydrated dolomitic limes and is accurate to within 0.1 percent. digital.library.unt.edu/ark:/67531/metadc100694/
Charts of Compressibility Factors and Charts Showing Quantities Delivered by Commercial Cylinders for Hydrogen, Nitrogen, and Oxygen
Two charts are given for each of the gases hydrogen, nitrogen, and oxygen. The first gives directly the number of standard cubic feet of the gas which a cylinder will deliver. The second chart gives values of the compressibility factor and of the density. digital.library.unt.edu/ark:/67531/metadc100695/
The Modernized Metric System: the International System of Units (SI) and its Relationship to U.S. Customary Units
Chart of the six base units of the modernized metric system, including length, time, mass, temperature, electric current, and luminous intensity. digital.library.unt.edu/ark:/67531/metadc100702/
The Modernized Metric System: the International System of Units-SI
Revised wall chart of the seven base units of the modernized metric system, including length, mass, time, electric current, temperature, amount of substance, luminous intensity, and plane angle. digital.library.unt.edu/ark:/67531/metadc100703/
[Charts for Various Aspects of Poles]
Chart 1A-1B. Conductor loading nomograph, Chart 2A. Bending moment due to wind pressure on pole, Chart 2B. Ultimate resisting moments of wood poles, Chart 3. Catenary curve. digital.library.unt.edu/ark:/67531/metadc100687/
Large Mollier Chart (Foot-Pound-Fahrenheit Units): Properties of Ammonia
Large mollier chart showing the properties of ammonia. digital.library.unt.edu/ark:/67531/metadc100681/
Report of the Thirty-Seventh National Conference on Weights and Measures, 1952
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings. digital.library.unt.edu/ark:/67531/metadc100670/
Compressibility of Gases
Reproduction of thirteen graphs for computing compressibilities of various gases and for computing the volumes delivered from cylinders containing various gases. digital.library.unt.edu/ark:/67531/metadc100682/
Design for Better Window Performance
Matrix diagram for design and construction of windows for energy conservation in buildings. digital.library.unt.edu/ark:/67531/metadc100704/
Report of the Twenty-First National Conference on Weights and Measures, 1928
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings. digital.library.unt.edu/ark:/67531/metadc100661/
Report of the Twenty-Second National Conference on Weights and Measures, 1929
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings. digital.library.unt.edu/ark:/67531/metadc100662/
Report of the Twenty-Third National Conference on Weights and Measures, 1930
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings. digital.library.unt.edu/ark:/67531/metadc100663/
Report of the Twenty-Fourth National Conference on Weights and Measures, 1931
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings. digital.library.unt.edu/ark:/67531/metadc100664/
Report of the Twenty-Fifth National Conference on Weights and Measures, 1935
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings. digital.library.unt.edu/ark:/67531/metadc100665/
Report of the Twenty-Sixth National Conference on Weights and Measures, 1936
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings. digital.library.unt.edu/ark:/67531/metadc100666/
Report of the Thirty-Third National Conference on Weights and Measures, 1947
Report of the annual conference on weights and measures, hosted by the U.S. National Bureau of Standards in Washington D.C. It includes conference proceedings, a list of attendees, information about committees and officers, and other reports or commentaries discussed at the meetings. digital.library.unt.edu/ark:/67531/metadc100667/
Bending Moment Due to Wind Pressure on Pole Chart 2A
Chart showing bending moment due to wind pressure on poles for various pole heights, circumferences, and loading. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39). digital.library.unt.edu/ark:/67531/metadc100689/
Catenary Chart 3
Chart of catenary curve ordinates: "The curve gives approximate values of sag at all points on the catenary curve expressed in per cent of the center sag. The error is negligible for all spans in which the center sag is less than 10% of the span length." It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39). digital.library.unt.edu/ark:/67531/metadc100691/
Conductor Loading Nomograph Chart 1B
Chart related to conductor loading showing vertical, transverse and conductor loads in pounds per linear feet of conductor. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39). digital.library.unt.edu/ark:/67531/metadc100688/
Ultimate Resisting Moments of Wood Poles Chart 2B
Chart showing the ultimate resisting moments of wood poles based on the circumferences at ground line for different kinds of woods. It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39). digital.library.unt.edu/ark:/67531/metadc100690/
Activities of the NBS Spectrochemical Analysis Section: July 1970 to June 1971
Review of the progress in research, instrumentation, and service activities of the Spectrochemical Analysis Section from July 1970 to June 1971. digital.library.unt.edu/ark:/67531/metadc100721/
Standards and Specifications for Metals and Metal Products
Nationally recognized standards and specifications for ores, metals, and manufactures except machinery, vehicles, and electrical supplies. digital.library.unt.edu/ark:/67531/metadc100676/
Standards Yearbook 1932
Outlines of the activities and accomplishments of the national and international standardization agencies. digital.library.unt.edu/ark:/67531/metadc100674/
Saturated Liquid Densities of Oxygen, Nitrogen, Argon, and Parahydrogen
Integrated tables of pressure, volume, and temperature for the saturated liquid, from the triple point to the critical point, for oxygen, nitrogen, argon, and parahydrogen. digital.library.unt.edu/ark:/67531/metadc100718/
Temperature-Entropy Diagram for Parahydrogen Triple-Point Region
Graphical presentation of he three-phase region at and near the triple point of parahydrogen. digital.library.unt.edu/ark:/67531/metadc100716/
Calculation of Sunrise and Sunset Times at Ionospheric Heights Along a Great Circle Path
Formulas, computer program, and illustrations for a great circle path at ionospheric heights. digital.library.unt.edu/ark:/67531/metadc100713/
Design for a Variable-Output-Coupling Far-Infrared Michelson Laser
Technique for varying the coupling of power from far-infrared gas lasers and the design and construction of these lasers. digital.library.unt.edu/ark:/67531/metadc100719/
National Electrical Safety Code, 4th edition
Fourth edition of the United States Electrical Safety Code. digital.library.unt.edu/ark:/67531/metadc100727/
Survey of the Properties of the Hydrogen Isotopes Below Their Critical Temperatures
The survey covers PVT, thermodynamic, thermal, transport, electrical radiative and mechanical properties. digital.library.unt.edu/ark:/67531/metadc100726/
HAYSTAQ: a Mechanized System for Searching Chemical Information
Description of a computer program for searching chemical information on magnetic tape. digital.library.unt.edu/ark:/67531/metadc100714/
Discussion of the National Electrical Safety Code: (to Accompany the Third Edition of the Code), October 31, 1920
Discussion of the updated rules in the third edition of the National Electrical Safety Code. digital.library.unt.edu/ark:/67531/metadc100728/
A Comparison of Two Melting-Pressure Equations Constrained to Triple Point Using Data for Eleven Gases and Three Metals
Parameters determined by a least-squares method for the reduced Simon equation and for a new, empirical melting equation. digital.library.unt.edu/ark:/67531/metadc100711/
WR15 Microwave Calorimeter and Bolometer Unit
Descriptions of the principal changes in the calorimeter and bolometer unit from the WR28 models of a microwave serving as National Bureau of Standards standard for power measurements in the frequency range 50 to 75 GHz. digital.library.unt.edu/ark:/67531/metadc100724/
Table and Mollier chart for ammonia below -60° F
A report containing a table and Mollier chart for ammonia below -60° F. digital.library.unt.edu/ark:/67531/metadc100739/
Automotive Antifreezes
From abstract: "A report on when antifreeze should be installed, what strength should be used, and what kind of antifreeze is best suited to the service involved." digital.library.unt.edu/ark:/67531/metadc100740/
Extension of Programs for Calculations of Great Circle Paths and Sunrise-Sunset Times
Modification of an earlier program to remove restrictions in calculating the short or long great circle path. digital.library.unt.edu/ark:/67531/metadc100715/
Manual of Fire-Loss Prevention
Principles of fire-resistance classifications of building types and materials, general methods for controlling the spread of fire, and general fire-prevention measures. digital.library.unt.edu/ark:/67531/metadc100731/
A New Near-Zone Electric Field-Strength Meter
Design and performance of a new near-zone electric field-strength meter. digital.library.unt.edu/ark:/67531/metadc100717/
Sensor Handbook for Automatic Test, Monitoring, Diagnostic, and Control Systems Applications to Military Vehicles and Machinery
From abstract: "Guide for those who design, specify, use, and test military automatic test equipment containing sensors." digital.library.unt.edu/ark:/67531/metadc101122/
Construction of a Flashlamp-Pumped Dye Laser and an Acousto-Optik Modulator for Mode-Locking
Design of a flashlamp-pumped dye laser capable of emitting light pulses 500 ns wide with a risetime of 300 ns. digital.library.unt.edu/ark:/67531/metadc100722/
X-Ray Wavelength Conversion Tables and Graphs for Qualitative Electron Probe Microanalysis
Tables and graphs constructed for electron probe x-ray spectrometers equipped with crystal changers and calibrated for LiF crystals in angstroms. digital.library.unt.edu/ark:/67531/metadc100720/
Glass Limit Standards Deposited at NBS for Railway, Highway, and Airways Traffic Signal Colors: History, Permanence and Colorimetric Properties
Permanence and colorimetric properties of signal glass. digital.library.unt.edu/ark:/67531/metadc100723/
Zinc and its alloys
A report on zinc and its alloys. digital.library.unt.edu/ark:/67531/metadc100738/
Motor-Vehicle Headlighting
A report on the necessity of improved motor-vehicle lighting. digital.library.unt.edu/ark:/67531/metadc100737/
Provisional Thermodynamic Functions for Para-Hydrogen
The need for thermodynamic functions of para hydrogen, especially in compressed liquid and dense fluid states, prompts the tabulation of these provisional properties, computed by approximate methods utilizing the new PVT data of these reports. Computation and preparation of the tables is discussed under the following: Approximate Computational Methods; Correlation Methods; Discussion of Errors; and Tables of Functions. digital.library.unt.edu/ark:/67531/metadc100709/
Standards and Specifications for Nonmetallic Minerals and Their Products
Collection and publishing of the substance of the standards and specifications relating to nonmetallic minerals and manufactures thereof. digital.library.unt.edu/ark:/67531/metadc100675/
Measures for Progress: a History of the National Bureau of Standards
Definitive history of the United States National Bureau of Standards. digital.library.unt.edu/ark:/67531/metadc100678/
Legibility of Alphanumeric Characters and Other Symbols: 2. A Reference Handbook
Major psychological findings and data in the field of the legibility of alphanumeric characters and other symbols. digital.library.unt.edu/ark:/67531/metadc100677/
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