64 



Table 39. 

 BRITISH AND METRIC UNITS. 



Cross sections and weights of wires. 



The cross section and the weight, in different units, of Aluminium wire of the diameters given in the first colnmni 

 For one tenth the diameter divide sections and weights by loo. For ten times the diameter multiply by loo, 

 and so on. 



• Columns 3-8, in thousandths of an inch ; 9-12, thousandths of a centimetre. 

 Smithsonian Tables. 



