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- Metric Units of Measurement, 1919 -
- 1919
- Collections - Artifact
Metric Units of Measurement, 1919
- United States Bureau of Standards Railroad Master Scale Equipment, 1919 - Railroads relied on accurate scales. The weight of a loaded freight car was used to calculate shipping charges. Weight measurements also helped prevent overloading, which could damage the car or track, bridges, and other structures. The large weights in this photo were used by the U.S. Bureau of Standards to verify the accuracy of railroad scales.
- 1919
- Collections - Artifact
United States Bureau of Standards Railroad Master Scale Equipment, 1919
Railroads relied on accurate scales. The weight of a loaded freight car was used to calculate shipping charges. Weight measurements also helped prevent overloading, which could damage the car or track, bridges, and other structures. The large weights in this photo were used by the U.S. Bureau of Standards to verify the accuracy of railroad scales.
- Precision Weights and Measures in a Laboratory at the United States Bureau of Standards, 1919 -
- 1919
- Collections - Artifact
Precision Weights and Measures in a Laboratory at the United States Bureau of Standards, 1919
- Kilogram Weights at the United States Bureau of Standards, 1919 -
- 1919
- Collections - Artifact
Kilogram Weights at the United States Bureau of Standards, 1919
- Hoke Gage Blocks Made at the U.S. Bureau of Standards, 1919 -
- 1919
- Collections - Artifact
Hoke Gage Blocks Made at the U.S. Bureau of Standards, 1919