TABLE 57. 



BRITISH UNITS. 



Cross sections and weights of wires. 



This table gives the cross section and weights in British units of copper, iron, and brass wires of the diameters 

 given in the first column. For one tenth the diameter divide section and weights by 100. For ten times the 

 diameter multiply by 100, and so on. 



SMITHSONIAN TABLES. 



44 



