Table 58. 



METRIC UNITS. 



Cross sections and weights ol wires. 



This table gives the cross section and the weight in metric units of copper, iron, and brass wires of the diameten 

 given in the first column. For one tenth the diameter divide sections and weights by ic». For ten times the 

 diameter multiply by loo, and so on. 



Smithsonian Tables. 



46 



