CONVERSION OF UNITS

To convert (for example) 7 3/8 in. carpenter’s measure to engineer’s measure, you have the following: For a great many types of conversions there are tables in which you can find the desired values by inspection. Various publications contain tables for making the following conversions: Meters to feet Feet to meters Degrees Centigrade to degrees Fahrenheit Degrees Fahrenheit to degrees Centigrade Inches and sixteenths to decimals of a foot Sixteenths of an inch to decimals of a foot Minutes to decimals of a degree Degrees to roils and roils to degrees Grads to degrees, minutes, and seconds A conversion factor is a number that, if multiplied by a value expressed in terms of one unit, will produce the equivalent value ex- pressed in terms of a different unit. The factor for converting linear feet to miles, for instance, is 0.00019. If you multiply 5,280 ft by 0.00019, you get 1.0032 miles, which is close enough to a mile to satisfy most practical purposes. When you know the ratio between two different units, you can easily work out your conversion factor. For example, you know that the ratio of degrees to roils is The conversiom factor for converting degrees to roils is the number of roils in 1 degree, which is The conversion factor converting roils to degrees is the number of degrees in a roil, which is Some of the common conversion factors are as follows : Linear feet x 0.00019 Linear yards x 0.0006 Square inches x 0.007 Square feet x 0.111 Square yards x 0.0002067 Acres x 4840.0 Cubic inches x 0.00058 Cubic feet x 0.03704 = miles = miles = square feet = square yards = acres = square yards = cubic feet = cubic yards 1-35