TABLE 4O6. 

 TABULAR COMPARISON OF WIRE GAGES. 



333 



* The Steel Wire Gage is the same gage which has been known by the various names: " Washburn and Moen," " Roeb~ 

 ling," "American Steel and Wire Co.'s." Its abbreviation should be written "Stl. W. G. r " to distinguish it from 

 " S. W. G.," the usual abbreviation for the (British) Standard Wire Gage. 



f The American Wire Gage sizes have been rounded off to the usual limits of commercial accuracy. They are giren 

 to four significant figures in Tables 410 to 413. They can be calculated with any desired accuracy, being based upon 

 a simple mathematical law. The diameter of No. oooo is denned as 0.4600 inch and of No. 36 as 0.0050 inch. The 



ratio of any diameter to the diameter of the next greater number \l = 1. 1229322. 



Taken from Circular No. 31. Copper Wire Tables, U.S. Bureau of Standards which contains more complete 

 tables. 

 SMITHSONIAN TABLES. 



