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The New Zealand Railways Magazine, Volume 5, Issue 9 (April 1, 1931)


Members of the Railway Department have no doubt observed surveyors on Railway property taking innumerable measurements, with strange instruments, have seen them waving their arms, driving pegs, placing coloured flags in position, and have no doubt wondered what purpose the various operations were intended to serve.

I will endeavour to take the reader along by easy stages from the more simple to the more advanced surveying methods, avoiding, as far as possible, technicalities.

For a better understanding of the subject, rough diagrams are given. Any dimensions shewn on these diagrams are, with a view to simplicity, in approximate figures only. (See page 13.)

Surveying may be described as ascertaining by measurement the shape and size of any portion of the earth's surface and representing the same, on a reduced scale, in a conventional manner, so as to bring the whole under the eye at once.