268 



HYDRAULIC EQUIPMENT 



In installing an automatic register (Fig 149) it is necessary 

 to provide a well for the float, connected with the river by an 

 intake pipe, a house to shelter the register, and staff or hook 



FIG. 148. Automatic Graphic Recording Water Stage Register. (Manufac- 

 factured by W. & L, E. Gurley, Troy, N. Y.) 



