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 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

Standard Time Zones of the United States and adjacent Parts of Canada and Mexico as of October 1, 1935

Date: 1935
Creator: Geological Survey (U.S.)
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Map of Standard Time Zones of the United States and Adjacent Parts of Canada and Mexico as of January 1, 1948

Map of Standard Time Zones of the United States and Adjacent Parts of Canada and Mexico as of January 1, 1948

Date: January 1, 1948
Creator: Geological Survey (U.S.)
Description: 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..
Contributing Partner: UNT Libraries Government Documents Department
Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Nomograms for Obtaining the Compound Composition of Hydrated Limes from the Oxide Analysis

Date: December 30, 1949
Creator: Levin, Ernest M.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Charts of Compressibility Factors and Charts Showing Quantities Delivered by Commercial Cylinders for Hydrogen, Nitrogen, and Oxygen

Charts of Compressibility Factors and Charts Showing Quantities Delivered by Commercial Cylinders for Hydrogen, Nitrogen, and Oxygen

Date: November 17, 1948
Creator: Hoge, Harold J.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
The Modernized Metric System: the International System of Units (SI) and its Relationship to U.S. Customary Units

The Modernized Metric System: the International System of Units (SI) and its Relationship to U.S. Customary Units

Date: 1968
Creator: United States. National Bureau of Standards.
Description: Chart of the six base units of the modernized metric system, including length, time, mass, temperature, electric current, and luminous intensity.
Contributing Partner: UNT Libraries Government Documents Department
The Modernized Metric System: the International System of Units-SI

The Modernized Metric System: the International System of Units-SI

Date: August 1981
Creator: United States. National Bureau of Standards.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
[Charts for Various Aspects of Poles]

[Charts for Various Aspects of Poles]

Date: August 7, 1944
Creator: United States. National Bureau of Standards.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Large Mollier Chart (Foot-Pound-Fahrenheit Units): Properties of Ammonia

Large Mollier Chart (Foot-Pound-Fahrenheit Units): Properties of Ammonia

Date: 1924
Creator: United States. Bureau of Standards.
Description: Large mollier chart showing the properties of ammonia.
Contributing Partner: UNT Libraries Government Documents Department
Report of the Thirty-Seventh National Conference on Weights and Measures, 1952

Report of the Thirty-Seventh National Conference on Weights and Measures, 1952

Date: March 19, 1953
Creator: United States. National Bureau of Standards.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Compressibility of Gases

Compressibility of Gases

Date: November 21, 1925
Creator: Pickering, Samuel Fisher
Description: Reproduction of thirteen graphs for computing compressibilities of various gases and for computing the volumes delivered from cylinders containing various gases.
Contributing Partner: UNT Libraries Government Documents Department
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