Chapter 1 Arithmetic Calculations , 1-24 Chapter 2 Units and Dimensions , 25-43 Chapter 3 Graphs and Nomographs , 44-86 Chapter 4 Data Reduction Techniques , 87-121 Chapter 5 Approximate Solution of Equations,122-156 Chapter 6 Economic Calculations , 157-175 Chapter 7 Introduction to Computers , 176-199