274 WEIGHT OF SQUARE ROLLED IRON. 



EXAMPLE. What is the weight of a bar of rolled iron 1 J 

 inches square and 12 inches long? 



In column 1st find 1, and opposite to it is 7.604 pounds, 

 which is 7 Ibs. and y^o 4 ^ of a Ib. If the lesser denomina- 

 tion of ounces is required, the result is obtained as follows : 

 Multiply the remainder by 16, pointing off the decimals as 

 in multiplication of decimals, and the figures remaining on 

 the left of the point indicate the number of ounces. 



Thus, ^V<r of a lb - = - 



16 



9.664 ounces. 



The weight, then, is 7 Ibs. O.y 6 ^ 4 ^ ounces. 



If the weight for less than a foot in length was required, 

 the readiest operation is this : 



EXAMPLE. What is the weight of a bar 6J inches square 

 and 9f inches long ? 



In column 5th, opposite to 6J, is 132.040, which is the 

 weight for a foot in length. 



6^x12 inches =132.040 



6. " isj- = 66.020 



3. " is I- of 6= 33.010 



4 " is -J of 3= 6.5016 



.J " isof J= 2.7508 



9-* =108.-A^V Pounds. 



