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Colonist, Volume LVII, Issue 14128, 3 July 1916, Page 4

A self-balancing crane is the invention of a New Zealander at Dunedin It has been taken up by a syndicate who have patented it practically ali over the world. The leading principle of this crane is that a weight runs back to whatever distance is necessary to compensate for the load on the jib, and it has another advantage in being able to swing a complete circle.