CONVERSIONS INVOLVING LINEAR MEASURES. XIX 



Example : 



To convert 1003.5 millibars into millimeters of mercury. 1003.5 m b. 

 = (1002.6 +0.9) mb. = (752 +0.68) mm. = 752.68 mm. 



Table 13. Feet into meters. table 13. 



From the adopted value of the meter, 39.3700 inches — 

 1 English foot = 0.3048006 meter. 



Table 13 gives the value in meters and thousandths (or millimeters) 

 for every foot from o to 99 feet; the value to hundredths of a meter (or 

 centimeters) of every 10 feet from 100 to 4090 feet; and the value to tenths 

 of a meter of every 10 feet from 4000 to 9090 feet. In using the latter part, 

 the first line of the table serves to interpolate for single feet. 

 Example : 



To convert 47 feet 7 inches to meters. 47 feet 7 inches = 47.583 feet. 



The table gives 47 feet = 14.326 meters. 



By moving the decimal point 0.583 " = 0.178 " 



47-583 feet = 14.504 meters. 

 Table 14. Meters into feet. table 14. 



I meter = 39.3700 inches = 3.280833 + feet. 

 From o to 509 meters the argument is given for every unit, and the 

 tabular values to two decimals; from 500 to 5090 the argument is given to 

 every 10 meters, and the tabular values to one decimal. The conversion for 

 tenths of a meter is added for convenience of interpolation. 

 Example : 



Convert 4327 meters to feet. 

 The table gives 



(4320 + 7) meters = (14173.2 +23.0) feet = 14196.2 feet. 



Table 15. Miles into kilometers. table is. 



1 mile = 1.609347 kilometers. 

 The table extends from o to 1009 miles with argument to single miles, 

 and from 1000 to 20000 miles for every 1000 miles. The tabular quanti- 

 ties are given to the nearest kilometer. 



Table 16. Kilometers into miles. 



TABLE 16. 



I kilometer = 0.621370 mile. 

 The table extends to 1009 kilometers with argument to single kilo- 

 meters, and from 1000 to 20000 kilometers for every 1000 kilometers. Tabu- 

 lar values are given to tenths of a mile. 

 Example : 



Convert 3957 kilometers into miles. 

 The table gives 



(3000 + 957) kilometers = (1864.1 + 594.7) miles = 2458.8 miles. 



