..."it is a remarkably readable text. I wish that the textbooks that I was required to buy at university were half as understandable. If you start at the beginning with a Granny Smith apple and a cup of tea, you will probably find that the cup is empty and apple core brown before you put this book down...topics are presented in a gentle conversational style with plenty of everyday examples to help you grasp the concepts...you do not have to use the book for passive input, but can actually apply the principles and test your knowledge along the way...I find that I can truthfully recommend this book to anyone with a serious interest in measurement and uncertainties, whether they are beginner or an old hand." The Australian Metrologist, Jeffrey Tapping