Excerpt from A Handbook for the Electrical Laboratory and Testing Room, Vol. 1

The only excuse that can be offered for adding another book to the already full catalogue of Electrical literature, especially under the heading of Electrical Measurements, is that, in spite of the numerous excellent works on this subject, there seemed room for one dealing more particularly with the requirements of electrical engineers as distinguished from electrical physicists. Several valuable handbooks exist dealing with the subject of Electrical Testing from the point of view of the telegraphist or physicist, but these generally contain either too much or two little for the purposes of those who have to deal with the class of electrical measurements which it is necessary to make in electrical stations or factories.

For this latter purpose, what is required is not a multiplication of methods gathered together without regard to their applicability or accuracy, but a selection of approved and well-tried methods.

In many text-books on Electrical Measurements there is an absence of critical discussion on the intrinsic utility of the various methods of measurement given. A process which looks well on paper does not always work out well in practice, and the practical engineer, therefore, requires to have placed before him a series of selected methods of measurement rather than a collection made as inclusive as possible. The present treatise has therefore been divided into a series of chapters, each of which deals with one particular class of measurements.

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