TABLES. 

 TABLES FOR CONVERTING U. S. WEIGHTS AND MEASURES.* 



(1) CUSTOMARY TO METRIC. 



According to an executive order dated April 15, 1803, tne United States yard is denned as 3600/3937 meter, and 

 the avoirdupois pound as 1/2.20462 kilogram. 



i meter (international prototype) 15^3164.13 times the wave-length of the red Cd. line. Benoit, Fabry and 

 Perot. C. R. 144, 1907 differs only in the decimal portion from the measure of Michelson and Benoit 14 years earlier. 



The length of the nautical mile given above and adopted by the U. S. Coast and Geodetic Survey many years ago, 

 is defined as that of a minute of arc of a great circle of a sphere whose surface equals that of the earth (Clarke's Sphe- 

 roid of 1866). 



* Quoted from sheets issued by the United States Bureau of Standards. 



SMITHSONIAN TABLES. 



