Page 20 Advertisements Column 2

New Zealand Tablet, Volume XXXI, Issue 32, 6 August 1903, Page 20

To keep the air in a publ'e building pure without creating a draught should be the aim of every architect, but this necessary result is not always attained. To lemedy this defect, Mr. H. I. M. Ross, Castle street, Dunedin, has invented his Double Current Ventilator, which introduces the fresh air free from dust and other impurities, at the lowest possible level of any apartment, and withdraws the heated and impure air from the highest point The value of such an invention is obvious, and we are pleased to learn that this veiy useful apparatus has received the highest encomiums from numbers of the medical profession, architects, builders, and Government officials ... A very useful tool is Mawson's Patent Lifting Jack, for lifting waggons and carriages while oiling, etc. It is one of the handiest and best Jacks made. One man can easily lift a ton, and its weight is only 14lb. It is Ljuick in action. A trial will demonstrate its wonder,ful utility as a great saving in muscular exertion. See it. The price is only 15s. Morrow, Bassett, and Co., solo agents. — ***