In order to illustrate the practical value of the slide rule, we now
give a number of examples which will doubtless be sufficient to suggest
the methods of working with other formulæ. A few of the rules give
results which are approximate only, but in all cases the degree of
accuracy obtained is well within the possible reading of the scales. In
many cases the rules given may be modified, if desired, by varying the
constants. In most of the examples the particular formula employed will
be evident from the solution, but in a few of the more complicated cases
a separate statement has been given.