SOMETHING NEW FOR THE SURVEYOR

Dominion, Volume 16, Issue 171, 7 April 1923, Page 22

SOMETHING NEW FOR THE SURVEYOR

The trader is often represented as the pioneer of the development of new markets, but the surveyor is really the man who blazes the trail for enterprise. The art of surveying is one of very ancient date and its modern development has consisted largely in the devising of new instruments to facilitate observations and make them ish instrument makers have played a leading part, and it is to one of them that we owe a new type of level-which is remarkably compact and convenient without being any less accurate than the normal patterns, which aro much more bulky and ponderous. This instrument, which is constructed of hard gun-metal, weighs only 6Jib. and one of its special features is the provision of two independent means of levelling. The first adjustment is a rough one nnd is made by bringing to its centre the bubble on a circular level. Tho telescope can then bo accurately levelled by means of a long and delicate spirit level operated by a micro-metre screw. The aecuracv of this adjustment can be very readily tested so as to ensure that the instrument is always in good order. Tho instrument can be fixed on a mahogany tripod weighing only 81b., but it can also be used 'without a stand.