LEVELING 107 



145. The hose level. In Chapter IX there is described 

 a device for leveling which is cheap to construct, simple 

 to operate, and accurate in results obtained. It consists 

 of a piece of inch or f-inch or even J-inch garden hose 

 about 60 feet long, into the ends of which have been 



FIG. 43. Closer view of water level and carpenter's level. 



clamped 12-inch pieces of water gauge tubing. With the 

 ends brought near together arid held in an upright posi- 

 tion, water is introduced till the hose is filled and the 

 water stands in the tubes half their lengths. The two 

 columns of water stand at the same height as shown in 

 Fig. 67 regardless of the position of the hose. 



