Excerpt telling the story of John Stewart Dethridge and the Dethridge Meter adopted for standard use by the State Rivers and Water Supply CommissionPhotocopied section of a book on 2 pages with picture of J. S. Dethridge and the Dethridge Meterdethridge, irrigation, dethridge meter, dethridge wheel, j. s. dethridge, john stewart dethridge, john dethridge