constructed no means of determining. according to its recommendations were sub- This has been changed since the establish- ment of the National Bureau of Standards mitted for test, while still others were grad- Fig. 2.—National Bureau of Standards Whirling Machine for Driving uated or pointed at… … scope through the glass win- signed to record the highest Fig. 4.—Section of Comparison Fig. 1.—National Bureau of Standards Compar- Tank. dow in the cylinder, while an ator for Testing Standard Thermometers. temperature to which they electrically driven agitator have been exposed, is self- keeps…
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