2. Section 2: Units

  1. Clifford Matthews

Published Online: 19 JAN 2012

DOI: 10.1002/9781119967958.ch2

Engineers' Data Book, Fourth Edition

Engineers' Data Book, Fourth Edition

How to Cite

Matthews, C. (2012) Section 2: Units, in Engineers' Data Book, Fourth Edition, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9781119967958.ch2

Publication History

  1. Published Online: 19 JAN 2012
  2. Published Print: 27 JAN 2012

ISBN Information

Print ISBN: 9781119976226

Online ISBN: 9781119967958



  • units, the Greek alphabet;
  • units systems;
  • units and conversions;
  • consistency of units, ‘quick check’ of equation validity;
  • foolproof conversions, using unity brackets, imperial-metric conversions;
  • dimensional analysis (DA), one physical quantity related to others;
  • DA for validity of equations;
  • primary and secondary quantities;
  • essential engineering mathematics, Trig functions of common angles;
  • maths and the real world, and calculus


This chapter contains sections titled:

  • The Greek alphabet

  • Units systems

  • Units and conversions

  • Consistency of units

  • Dimensional analysis

  • Essential engineering mathematics

  • Maths and the real world?